Smart Kit catalogue (En)

Smart Electronics is synonymous to High Quality electronics since 

1980.The company is well known to generations of professional, 

educational, and hobby enthusiasts all around the world. 

There are thousands of people who learned electronics using our kits 

and today are electronic engineers and well known professionals. 

From Island to S.Africa and from USA to Hong Kong , Smart Kits are 

exported in many countries and they are famous for their quality and 

well known as best value for money products. 

During last year we worked very hard to improve our range.We 

created new kits -some of them using of microcontrollers- and we 

redesigned some others.The majority of the kits now have the CE 

approval and its a matter of time to get the approval for all the rest. 

We also paid the proper attention to offer you the right information. In our site at Internet 

www.smartkit.gr you will find all the info about Smart Kits in English, German, Dutch, Danish, 

Swedish, Italian, Spanish, Portuguese, French, Hungarian and Greek.The most of the kits have 

already multilingual instructions in 8 languages.This catalogue is also among our efforts to provide 

you the info that you require to make the right selection.Try a Smart Kit! 

WHAT IS A SMART KIT? 

It is an easy way to build an electronic device such as:A.F. amplifiers, F.M. transmitters, alarms, 

power supplies, instruments, light modulators bugging devices etc.Apart from that, there is a great 

fun in building electronic circuits, you can also feel very proud for your creativity and of course 

you have a chance to learn a lot! 

Furthermore you can save a lot of money because kits cost less than assembled devices. 

A Smart Kit pack contains everything that you need to build the circuit.All the components, 

printed circuit boards and instructions -usually in your language- are included in the package.All 

you need is, just a soldering iron! 

Smart Electronics Ltd, 

39 Ag. Konstantinou Str, Athens 104 37, Greece 

Tel: 5230 000 - 5231 555 Fax: 5245474 

e-mail: smarty@hol.gr 

web site: www.smartkit.gr 

Internet site: http://www.smartkit.gr 1

KIT DESCRIPTION PAGE 

1001 FM TRANSMITTER 0,2 WATT 4 

1002 VU-METER WITH LEDs ñ ñ 35 

1003 ELECTRONIC SIREN 5 WATT ñ ñ 40 

1004 LIGHT SWITCH ñ 26 

1005 TOUCH SWITCH ñ ñ 26 

1006 MUSIC TO LIGHT EFFECT 800 WATT ñ 29 

1007 STABILIZED POWER SUPPLY 3-30V/2,5A ñ ñ 44 

1008 AF FUNCTION GENERATOR 36 

1009 FM TRANSMITTER 1 WATT 4 

1010 5-INPUTS STEREO MIXER 16 

1011 MOTORBIKE ALARM ñ ñ 12 

1012 SPRING REVERBERATION 23 

1013 VHF-FM-TV RECEIVER 7 

1014 3 CHANNEL WIRELESS LIGHT MODULATOR 29 

1015 ELECTRONIC MOSQUITO REPELLER ñ ñ 47 

1016 LOUDSPEAKER PROTECTION UNIT 23 

1017 LINEAR CB 30 WATT 6 

1018 GUITAR TREMOLO 22 

1019 CAR ALARM SYSTEM ñ ñ 12 

1020 0-5 MIN TIME SWITCH ñ ñ 9 

1021 FM TRANSMITTER 15 WATT (ASSEMBLED) 4 

1022 METAL DETECTOR ñ ñ 47 

1023 DYNAMIC HEAD PREAMPLIFIER-RIAA ñ ñ 16 

1024 MICROPHONE PREAMPLIFIER ñ ñ 16 

1025 HI-FI AMPLIFIER 7 WATT ñ ñ 19 

1026 RUNNING LIGHTS ñ 29 

1027 NI-CAD BATTERY CHARGER ñ ñ 43 

1028 FM TRANSMITTER 4 WATT 4 

1029 4-SOUNDs ELECTRONIC SIREN ñ ñ 40 

1030 LIGHT DIMMER 50 

1031 FM TRANSMITTER 25 WATT (ASSEMBLED) 5 

1032 STEREO TONE CONTROLS 23 


1034 CAR BATTERY CHECKER ñ ñ 12 

1035 SPACE SOUND EFFECTS ñ ñ 25 

1036 TRANSISTOR TESTER ñ ñ 36 

1037 DISCO STROBO LIGHT 29 

1038 AM-FM AERIAL AMPLIFIER ñ ñ 7 

1039 STEREO VU-METER ñ ñ 35 



1042 AF GENERATOR 250Hz-16KHz ñ ñ 36 

1043 LOUDNESS STEREO UNIT ñ ñ 23 

1044 GRAPHIC EQUALIZER 24 

1045 SOUND EFFECTS GENERATOR ñ ñ 25 

1046 BOOSTER AMPLIFIER 2X25 WATT ñ ñ 20 

1047 SOUND SWITCH ñ ñ 26 

SMART KIT CATALOGUE 


1048 ELECTRONIC THERMOSTAT ñ ñ 26 

1049 ULTRASONIC RADAR ñ ñ 40 

1050 3-INPUTs HI-FI PREAMPLIFIER 16 

1051 TOUCH DIMMER 50 

1052 3-INPUTs MONO MIXER 17 

1053 ELECTRONIC METRONOME ñ 22 

1054 4-INPUTs INSTRUMENT MIXER 17 

1055 FM RECEIVER ñ ñ 7 

1056 STABILIZED POWER SUPPLY 8-20V/8A 44 

1057 CASSETTE HEAD PREAMPLIFIER 17 

1058 ELECTRONIC CAR IGNITION 12 

1059 TELEPHONE AMPLIFIER ñ ñ 32 

1060 POWER SUPPLY ±40V/8A ñ ñ 44 

1061 STABILIZED POWER SUPPLY 15V 0,5A ñ ñ 44 

1062 TTLs STABILIZED POWER SUPPLY ñ 45 

1063 POWER SUPPLY 15V 2A ñ 45 

1064 STABILIZED POWER SUPPLY ±12V 0,5A ñ 45 

1065 INVERTER 12 VDC-220 VAC/50Hz ñ ñ 43 

1066 MOTORBIKE INTERCOM ñ ñ 13 

1067 STEREO VU-METER WITH LEDS 37 

1068 POWER SUPPLY 18V/0,5A 45 

1069 12VDC FLUORESCENCE 43 

1070 HI-FI PREAMPLIFIER 17 

1071 4-INPUTs SELECTOR FOR 1070 ñ 18 

1072 AUTOMATIC MAINS LIGHT SWITCH 27 

1073 VOX FOR AUTOMATIC RECORDINCS ñ ñ 27 

1074 DRILL SPEED CONTROLLER 51 

1075 ELECTRONIC DICE WITH LEDs ñ 47 

1076 ELECTRONIC THERMOSTAT ñ 27 


1078 PROTECTION FROM MALICIOUS CALLS 32 

1079 FM-STEREO ENCODER 6 

1080 LIQUID LEVEL SENSOR/RAIN ALARM ñ 27 

1081 FLUID LEVEL DETECTOR ñ 28 

1082 CAR VOLTMETER WITH LEDs ñ ñ 13 

1083 VIDEO SIGNAL AMPLIFIER ñ ñ 8 

1084 T.V. LINE AMPLIFIER 8 

1085 DC CONVERTER 12 TO 6/7.5/9V ñ ñ 43 

1086 CAR’S MUSIC TO LIGHT MODULATOR ñ ñ 13 

1087 THYRISTOR-TRIAC TESTER ñ 36 

1088 “KITT” SCANNER ñ 13 

1089 LED FLASHER - 555 TESTER ñ ñ 47 

1090 STRESS METER 48 

1091 GUITAR PREAM.WITH TONE CONTROLS ñ 22 

1092 IN-CAR IONISER 14 

1093 WINDSHIELD WIPER CONTROLLER ñ ñ 14 

1094 HOME/SHOP ALARM SYSTEM ñ ñ 40 

2 Internet site: http://www.smartkit.gr

IN NUMERICAL ORDER 

ñ Kits with CE approval 

ñ Kits with multilingual 


1095 LEAD ACID BATTERY CHARGER ñ ñ 14 

1096 STABILIZED POWER SUPPLY2-30VDC/5A ñ 46 

1097 CAR INTERFERENCE SUPPRESSOR 

(ASSEMBLED) ñ 14 

1098 DIGITAL THERMOMETER WITH LCD ñ ñ 37 

1099 DIGITAL VOLTMETER WITH LCD ñ 37 

1100 INTEGRATED STEREO AMPLIFIER 2X18 W 20 

1101 DOLLAR TESTER 48 

1102 STEREO VU-METER WITH 14 LEDs 35 

1103 LED POWER METER ñ ñ 37 

1104 SWEET LITTLE HEART ñ 30 

1105 HUMIDITY METER WITH LCD 37 

1107 ELECTRONIC 1X2 ñ 48 

1109 HI-FI AMPLIFIER 40 WATT 21 

1110 OSCILLOSCOPE COMPONENT TESTER 38 

1111 LOGIC PROBE ñ 38 

1112 LOUDSPEAKER PROTECTION 

WITH RELAY ñ ñ 24 

1113 HI-FI AMPLIFIER 2X18 WATT 21 

1114 ELECTRONIC LOCK ñ ñ 41 

1115 COURTESY LIGHT DELAY ñ ñ 15 

1116 SIGNAL INJECTOR AND SIGNAL TRACER 38 

1117 T.V. PATTERN GENERATOR 8 

1118 TIME SWITCH TRIAC 0-10 MIN 9 

1119 TELEPHONE LINE RECORDING ñ 32 

1120 R.P.M. INDICATOR WITH LED’s 15 

1121 GIANT DIGITAL CLOCK 9 

1122 TELEPHONE CALL RELAY ñ 32 

1123 MORSE CODE GENERATOR ñ ñ 48 

1124 ELECTRONIC BELL ñ ñ 49 

1125 PULSE TELEPHONE LOCK 33 

1126 3 MICROPHONE INPUTS PREAMPLIFIER ñ 18 

1127 TONE CONTROLS FOR 1126 18 

1128 POWER FLASHER 12 VDC ñ ñ 40 

1129 NEGATIVE ION GENERATOR 49 

1130 TELEPHONE “BUG” DETECTOR 33 

1131 ROBOT VOICE 25 

1132 SUPERLIGHT- 3 CH. LIGHT EFFECT. 30 

1133 STEREO SOUND TO LIGHT MODULATOR 30 

1134 AUTOMATIC DIMMER 51 

1135 TELEPHONE ‘’ BUG ‘’ TRANSMITTER 5 

1137 DIGITAL VOLTMETER WITH LED DISPLAYS 38 

1138 STABILIZED POWER SUPPLY 0-30VDC/3A 48 

1139 MINI DRILL SPEED CONTROLLER 51 

1140 5 ZONE ALARM SYSTEM 41 

1141 LINEAR FM 30 W (ASSEMBLED) 6 

1142 DIGITAL VOLTMETER WITH LED DISPLAY 39 


1143 R.P.M. DIGITAL INDICATOR 15 

1144 PLL SYNTHESIZER FM 88-108 Mhz 5 

1145 TVI FILTER 39 

1149 DIGITAL SOUND RECORDER 24 

1150 PORTABLE ALARM ñ 41 

1151 SUPER TV PATTERN GENERATOR 8 

1152 FREQUENCY METER 10Hz-1MHz 39 

1153 STAR LIGHT ñ 30 

1154 TRANSMITTER’’ BUGS ‘’ DETECTOR 7 

1155 TELEPHONE SCRABLER 33 

1156 LOTTO-FORTUNE MACHINE 49 

1157 SPECIAL LIGHT EFFECTS UNIT 31 

1158 REMOTE CONTROL-RECEIVER 28 

1159 REMOTE CONTROL-TRANSMITTER 28 

1161 PORTABLE WALKMAN AMPLIFIER 2X2W 21 

1162 DUBLE HEART FLASHER ñ ñ 31 

1163 DOUBLE TIMER-SWITCH 9 

1164 8CH.TIMER CONTROLLED BY P.C. 52 

1165 1 TO 6 MIN.SUPERTIMER 11 

1166 SUPER RIAA PREAMPLIFIER 18 

1167 TELEPHONE LINES PRIORITY SWITCH 33 

1168 LED ACTIVATED SWITCH 28 

1169 POWER SUPPLY 3, 4.5, 6, 9, 12VDC/1.5A 46 

1170 DIGITAL MESSAGE RECORDER/ PLAYER ñ 24 

1171 RFI POWER SUPPLY 12-14V /3A 46 

1172 UP-DOWN COUNTER 11 

1173 DIGITAL DOWN TIMER 99 MIN WITH PIC 11 

1175 CHRISTMAS TREE WITH LEDs ñ 31 

1176 JINGLE BELLS WITH LEDs AND MUSIC ñ 31 

1177 PROGRAMMABLE ELECTRINIC LOCK 42 

1178 PRECISION TIMER 1-256 MIN 11 

1179 LINEAR FM 15 W (ASSEMBLED) 6 

1180 24H CLOCK/TIME SWITCH TWO OUTPUTS 11 

1182 MUSICAL HOLD ON 34 

1183 DIGITAL COUNTER WITH 3 DISPLAYS 11 

1184 EMERGENCY LIGHT 42 

1185 TELEPHONE IN USE INDICATION 34 

1186 8 CH REMOTE CONTROL BY TELEPHONE 34 

1187 VCO FM 88-108 Mhz / 3W 5 

1189 REAR STOP - BRAKE LIGHTS FOR CAR 15 

1191 ELECTRONIC PUT N`TAKE 49 

1192 ELECTRONIC ROULETTE 50 

1193 SUPER MICROPHONE PREAMPLIFIER 19 

1194 DIGITAL TELEPHONE RECORDER 34 

1195 MULTITONE CHIME 50 

1196 COMPUTER INTERFACE 52 

1197 2 ZONE ALARM SYSTEM 42 

1199 HI FI AMPLIFIER 200W 21 


1001 

TRANSMITTERS 

FM TRANSMITTER 0.2W 

A mini FM transmitter with two transistors.The first is 

used as an AF preamplifier and the second is the RF 

stage.The sensitivity of the preamplifier is exceptionally 

high.The kit comes complete with a FET electret 

microphone. It is designed to cover the 88-108 MHz 

band, but it is very easy to change the frequency to 

cover all the range between 63 and 130 MHz. Output 

power: 0.2W RF. Max. current: 0.05 A. 

SUITABLE BOX 2001 

V 

P.S. 

T 

PCB 

9 VDC H 

20x33mm 

1009 

FM TRANSMITER 1W 

A simple but very powerful FM transmitter that will 

give you a very pleasant surprise with its capabilities. It 

is built around two transistors.The first is used as an 

AF preamplifier and the second is the RF stage.The kit 

includes the microphone which is piezoelectric.As an 

aerial can be used an open dipole. 

V 8-30 VDC 

P.S. 1061 

T 

PCB 42x45mm 

1021 


FM TRANSMITTER 15W (ASSEMBLED PCB) 

A fantastic project! A very powerful FM transmitter 

consisting of 4 stages. It uses transistors throughout 

and in the output has the BLY 88 made by PHILIPS. It 

can drive a LINEAR if greater power output is desired. 

It delivers 15 Watts of RF. power on the air.As a 

modulator preamplifier can be used with the SMART 

KIT 1052.The aerial can be an open dipole, GROUND 

PLANE, 5/8, J, or a YAGI. 

V 12-18 VDC 

P.S. 1171 

T 

PCB 70x220mm 

1028 

FM TRANSMITTER 4W 

A small but nevertheless very powerful FM transmitter. 

The transmitter circuit consists of three RF stages, and 

an audio preamplifier. It can be modulated directly from 

a piezoelectric microphone which comes in the kit or 

from a preamplifier. It delivers 4 Watts of RF power on 

the antenna.The antenna can be an open dipole or a 

GROUND PLANE. 

V 12-18 VDC 

P.S. 1171 

T 

PCB 44x146mm 


TRANSMITTERS 

1031 

FM TRANSMITTER 25W (ASSEMBLED PCB) 

A very interesting RF project! A powerful FM 

transmitter consisting of 4 stages. It uses 

TRANSISTORS throughout and in the output has the 

BLY 89 made by PHILIPS which delivers 25 Watts on 

the air. It can be used to drive a LINEAR if greater 

power output is desired.As a modulator preamplifier 

can be used the SMART KIT 1052.The aerial can be an 

open dipole, a GROUND PLANE, a 5/8, a J, or a YAGI 

V 12-15 VDC 

P.S. 1171 

T 

PCB 70x220mm 

1135 

1144 

1187 

TELEPHONE ‘’BUG’’ TRANSMITTER 

It is suitable for listening to telephone conversations in 

a small distance around the transmitting point. It is 

connected in series with the telephone and as soon as 

the receiver is picked up it starts transmitting. It is 

powered from the telephone line.Attention. Use this 

device in accordance with your country regulations. 

PLL SYNTHESIZER FM 88-108 MHz 

Upgrade your FM transmitter, with an FM PLL 

synthesizer, that ensures accurate tuning without the 

slightest declination.This is accomplished by using a 

combination of dip switches to select a certain 

frequency.The stability of the circuit is excellent, due to 

the Motorola’s MC145151 and a crystal. Bandwidth 

88-108 MHz with 50KHz step.Two layer epoxy PCB. If 

you use the 1144 along with the kit 1187, you have a 

complete PLL transmitter that can drive a linear 

amplifier for even more power. 

VCO FM 88-108 MHz /3W 

The ideal way to extend the range and the capabilities 

of your transmitter without spending a lot of money.A 

VCO-linear VHF amplifier for the band 88-108 MHz, 

for transmitters with frequency modulation (FM).The 

circuit is based on high frequency transistors leading to 

a BFS22A, and ensures a power of 3 Watt in the 

antenna. Easy tuning. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

FROM TEL. LINE 

15X30mm 

☎ 

24-30 VDC 

65x12mm 

24-30 VDC 

65X160mm 


LINEARS - ENCODERS 

1017 

LINEAR CB 30 W 

A linear amplifier that will make possible long distance 

communications, with your existing CB equipment. It is 

connected at the transmitter output before the 

antenna and is very simple to built and adjust.The 

heatsink is included in the kit.The circuit also has a 

relay that will switch the aerial from the transmitter to 

the receiver automatically. 

V 13,5 VDC 

P.S. 1171 

T 

PCB 88x44mm 

1079 

FM STEREO ENCODER 

A generator that converts any FM transmitter to 

STEREO.You can easily connect it to any existing FM 

transmitter and without spending a lot of money and 

making complicated conversions.You can improve the 

standard of your broadcasting.Try it and start 

broadcasting in professional STEREO today! 

V 

P.S. 

230 VAC 

T 24VAC/0,5A 

PCB 

a:35x156mm 

b: 87x186mm 

1141 

LINEAR 30W FM (ASSEMBLED PCB) 

The ideal way to extend the range and the capabilities 

of your transmitter without spending a lot of money.A 

linear VHF amplifier for the 88-108 Mhz band, for 

transmitters with frequency modulation (FM).The 

circuit is based on high frequency transistors leading to 

a BLY89, and ensures a power of 30 Watt in the 

antenna. Easy tuning. 

V 13 VDC 

P.S. 1171 

T 

PCB 68x118mm 

1179 

LINEAR 15 WATT (ASSEMBLED PCB) 

The ideal way for transmission in small areas without 

spending a lot of money.A linear VHF amplifier for the 

band 88-108 MHz, that transmits with frequency 

modulation (FM).The circuit is based on high frequency 

transistors leading to a BLY88, and ensures a power of 

15 Watt in the antenna. Easy tuning. 

V 13 VDC 

P.S. 1171 

T 

PCB 66x161mm 


RECEIVERS 

1013 

VHF - FM - TV RECEIVER 

A receiver that lets you listen to all the frequencies 

between 50 and 160 MHz. It can receive signals in AM 

and FM.The tuning is done by means of a VARICAP 

diode which gives the receiver greater stability. For the 

audio output the receiver has a 5 Watt power amplifier 

incorporated on the same board. Bandwidth: 50-160 

MHz. Maximum current: 0.5A.AF output power: 

5 Watts. 

V 12-15 VDC 

P.S. 1061 

T 

PCB 58X168mm 

1038 

AM - FM AERIAL AMPLIFIER 

A small amplifier with a good gain factor, and a 

bandwidth broad enough to cover all the broadcasting 

frequencies from 1 to 150 MHz. Ideal for use in the car 

or with any radio in “difficult” reception areas.A simple 

project to build, even for the most inexperienced 

beginners. Max. current: 10mA. Gain: 6dB. 

V 

P.S. 

T 

PCB 

CE 

9-12 VDC 

30x35mm 

1055 

FM RECEIVER 

A small FM receiver that will surprise you with its 

sensitivity and quality. It uses the TDA 7000 which is a 

complete FM receiver in a single IC package. It features 

varicap tuning for higher stability and also incorporates 

a powerful audio amplifier with a 5W output.The kit 

includes the loudspeaker. Sensitivity: 1.5V.Audio output 

power: 5 Watts. Distortion 0.7% 

CE 

V 9-15 VDC 

P.S. 1061 

T 

PCB 52x80mm 

1154 

TRANSMITTER ‘’BUG’’ DETECTOR 

A very simple and useful kit which can protect your 

private life. It detects and locates any transmitter (bug) 

device which transmits in any frequency range up to 

1GHz. 

V 

P.S. 

T 

9 VDC H 

PCB 54x66mm 


1083 

TV - VIDEO 

VIDEO SIGNAL AMPLIFIER 

This project comes to solve the problem of many users 

of home VIDEOS who want to drive more than one TV 

set from the same VCR or those who want to make a 

duplicate recording of a tape on another VCR. It has 

one input and up to three outputs. 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 

35x120mm 

1084 


TV LINE AMPLIFIER 

A broadband aerial amplifier suitable for TV1,VHF and 

UHF. It can also be used for FM receivers. It has a very 

low power consumption. Frequency range 40-860 MHz. 

Signal gain: 15-22dB. Input output impedance: 75Ohm. 

V 9-18 VDC 

P.S. 1061 

T 

PCB 

41x55mm 

1117 

1151 

TV PATTERN GENERATOR 

An inexpensive and relatively easy to built TV PATTERN 

GENERATOR that will be very useful to the professional 

technician who does TV service on location. Now there 

is no need to carry out of the laboratory expensive and 

heavy equipment.The generator produces horizontal 

and vertical lines to create a grid pattern. It has an 

oscillator that determines the output frequency and 

operates in the UHF band.The number of the displayed 

lines can be adjusted. 

SUPER TV PATTERN GENERATOR 

An easy to build TV pattern generator. It is built around 

the well known IC, ZNA234E made by FERRANTI. It 

produces six different patterns: horizontal lines, vertical 

lines, horizontal and vertical lines (cross hatch), white 

dots in a black raster, grey scale, and black raster. Ideal 

for TV service, and adjustments.The patterns are 

selected by a six position selector. Power dissipation: 

130mA. Output impedance: 75Ohm. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

9 VDC H 

82x118mm 

9 VAC 

9VAC/0,5A 

56x100mm 


TIMERS - COUNTERS 

1020 

0-5 MIN.TIME SWITCH CE 

A simple time switch continuously adjustable between 

0 and 5 minutes. Suitable for alarms, photographic 

laboratories etc. It uses the well known timer IC 555. 

It has a relay capable of handling up to 250V/2 A.This 

circuit can replace commercial time switches at a 

fraction of the cost. Max.current: 50mA. Delay time: 0-5 

mins. 

V 

12 VDC 

P.S. 1061 

T 

PCB 

39x50mm 

1118 

TIME-SWITCH WITH TRIAC 0-10 MIN 

A heavy duty time switch without relay, suitable for 

many applications like the control of the lights in a 

staircase, for professional-industrial applications etc. It 

is powered directly from the mains without a special 

power supply.The timing period can be adjusted from 

0-10 min. 

V 

P.S. 

T 

PCB 

230 VAC 

72x87mm 

1121 

1163 

GIANT DIGITAL CLOCK 

A digital clock that shows the time on a big display, 

suitable for schools, clubs, restaurants, etc.The circuit is 

based on the microproccessor PIC 16C57, and ensures 

accuracy, reliability and easy construction.The time is 

shown in four large red digits that can be seen in a 

distance up to 20 meters.The time can be adjusted by 

small buttons in rear of the display.The 

microproccessor’s PCB can be split from the digits’ 

housing. 

DOUBLE TIMER-SWITCH 

A double timer-switch which includes two independent 

circuits.The adjustable time lies between 30 seconds 

and 5 minutes.The operation of the timer-switch can 

be ON-OFF or ON-OFF-ON etc. it can be used in 

automation circuits, traffic lights etc. 

V 12-14 VDC 

P.S. 1063 

T 

PCB 75X275mm 

V 12 VDC 

P.S. 1061 

T 

PCB 

67x122mm 



1165 

1 TO 6 MIN. SUPERTIMER 

This is a general purpose adjustable timer built around 

the well known IC 555.The time can be adjusted from 

55 sec to 6 1/2 min. Power consumption 45mA. It can 

be used in automation, alarms, lights, photographic 

laboratories etc. 

V 9-15 VDC 

P.S. 1061 

T 

PCB 

44x60mm 

1172 

UP-DOWN COUNTER 

It is a general purpose up / down counter with a preset 

function. It is built around a microcontroller which 

gives the maximum of accuracy.The indication is 

provided using four seven segments displays.The unit 

has two indepentet outputs of 2A/250VAC controlled 

by means of relays. 

V 

P.S. 1061 

T 

PCB 

9-12 VDC 

a: 103x105mm 

b: 51x122mm 

1173 

1178 

DIGITAL DOWN TIMER 99 min WITH PIC 

A simple and useful circuit that will help you in 

accurate time countdown.The circuit is based on the 

PIC16C54 to ensure accuracy and reliability. It is easily 

programmable from 99 - 0 minutes for down counting 

and when it reaches point zero, it activates a relay. Ideal 

for use in automatic machines and in programmable 

time counting in general, and has the capability of 

backup.The unit is consisting from two different PCB 

boards, one for the control unit and the second for the 

display panel. Consumption 220mA max. 

PRECISION TIMER 1 - 256 MINUTES 

A simple and useful circuit for accurate timing.The 

circuit is based on the microproccessor PIC16C54 that 

ensures reliability and accuracy. Easy programmming 

with dip switches.When the desired reprogrammed 

time is reached, a relay is activated. Ideal for use with 

all types of time controlled machines. 

V 

12 VDC 

P.S. 1061 

T 

PCB 

V 

a: 40x93mm 

b: 80x93mm 

12 VDC 

P.S. 1061 

T 

PCB 72x84mm 



1180 

24H CLOCK/TIME SWITCH WITH 2 OUTPUTS 

Based on a microcontroller it has a real time clock, 

two indepentet outputs (2A/250VAC) controlled by 

means of relays and a display with four seven segment 

displays.The unit can also supply a bacup battery (not 

included) to keep the data in case of a power failure. 

V 

12 VDC 

P.S. 1061 

T 

PCB 

a: 80x93mm 

b: 38x93mm 

1183 

DIGITAL COUNTER WITH 3 DISPLAYS 

A useful circuit that helps you to count consecutive 

incidents.The circuit depends on the microproccessor 

PIC 16C45 and ensures accuracy and reliability.The 

result is shown on a 3 digit display, witch means you 

have the ability to count until 999.When number 999 

is reached, the circuit automatically restarts counting 

from 000. Large red display for good readability from 

long distance. 

V 9-12 VDC 

P.S. 1061 

T 

PCB 62x142mm 

Smart... as you like it! 

ñ The ordinary form of the kit for people who enjoy assembling and 

have the sense of adventure, and know basic electronics.All the 

components of the kit, even the solder, are included in the pack.A 

careful reading of the instructions and a soldering iron are all you 

need, and you your kit will be ready use. 

ñ If you wish your kit to look professional, the only thing you need is 

using a smart box.All the boxes are silk printed, drilled and are the 

ideal housing for smart kits. In order to choose the right box, you just 

have to remember that they have the same code number as the 

corresponding kit.The only difference is that the first digit from the 

P/N of the kit «1» is replaced by the number «2». (e.g. smart box 2014 

for the kit 1014). 

ñ Do you wish to buy a popular kit as a ready made electronic 

apparatus? You can select any one from our 5000 line.All the units are 

professionally assembled and cased in a smart box, fully tested, 

adjusted and ready for use.The ready made devices have the same 

code number as the kit,The only difference is that the first digit from 

the P/N of the kit «1» is replaced by the number «5» (e.g. the 5014 is 

the ready made device for the kit 1014). 


CARS AND BIKES 

1011 

1019 

1034 

MOTORBIKE ALARM 

A project that protects your beloved motorbike. It uses 

a simple vibration sensitive contact that detects the 

slightest movement of the motorbike (the sensitivity is 

adjustable) and triggers the alarm.When the alarm is 

triggered the output relay closes and its up to you to 

connect across it a siren, (e.g. 1003) the motorbike’s 

horn or any other warning device.The circuit has a preset 

alarm time.When that elapses it resets automatically. 

SUITABLE BOX 2011 ASSEMBLED UNIT 5011 

CAR ALARM SYSTEM 

A circuit that will effectively protect your car from theft. 

It can be triggered from the vibrations that will inevitably 

cause anyone attempting to break into the car. It will 

also detect a door opening as long as it is connected 

with the courtesy light by sensing the voltage drop 

across the car battery when the light is turned on. It has 

entry and exit delays and the alarm duration is 

adjustable. It resets automatically after an alarm. 


CAR BATTERY CHECKER 

A very simple, easy to built and inexpensive circuit that 

once installed will monitor constantly the state of 

charge of your car battery and will protect you from 

unpleasant “surprises”.Very small in size, can be fitted 

easily in every dashboard. Max. current: 40 mA 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

CE 

6-12 VDC 

57x64mm 

CE 

6-12 VDC 

47x55mm 

CE 

12 VDC 

36x47mm 

1058 

ELECTRONIC CAR IGNITION 

A useful project for the car. It will help you to improve 

your car performance and at the same time it will 

reduce maintenance cost, as the use of an electronic 

ignition system reduces wear of distributor contacts 

and prolongs the useful life of the spark-plugs.The fuel 

consumption is also reduced and the car starts a lot 

easier on cold days. 


V 12 VDC 

P.S. 

T 

PCB 67x135mm 



1066 

MOTORBIKE INTERCOM 

A very useful kit for motorists, which can also be used 

wherever a light, economical, and portable intercom is 

required.The circuit has very low consumption making 

it possible to operate for a long time on two AA 1.5V 

batteries. Current: 10mA 

V 

P.S. 

T 

PCB 

CE 

3 VDC H 

44x55mm 


1082 

CAR VOLTMETER WITH LEDs 

A very accurate voltmeter for your car. It uses a dot 

display with 16 LEDs of different colours (red, orange, 

green), and gives you an indication of the battery 

voltage with a 0.5V accuracy. Much more accurate than 

conventional analogue meters.The colour coding of the 

LEDs gives you an immediate indication of the battery 

state of charge. Max. current: 50mA. 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 50x105mm 

1086 

CAR’S MUSIC TO LIGHT MODULATOR 

Bring something of the atmosphere of a DISCO in 

your car with this fascinating light effect.The circuit has 

three different channels with 6 LEDs each that will 

respond to different frequencies to create a beautiful 

light effect.Add colour to your car interior with this 

easy to built project. Max. current: 0.2A. 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 68x74mm 

1088 

“KITT” SCANNER 

Make your car look like “KITT” the computerised car 

in the “KNIGHT RIDER” TV series.The kit comes 

complete with a special red mask for the lights just to 

make the effect look more like the real thing.The 

speed of movement of the lights is adjustable by means 

of a trimmer. 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 60x76mm 



1092 

IN-CAR IONISER 

A device that can improve your health and your 

temper especially during the traffic jam in big cities. 

It brings nature in your car, refreshes the air and 

enriches the air with negative ions which are very 

important for our lives. It can be installed in your car 

very easily due to its small size. 

V 

P.S. 

T 

PCB 

12 VDC 

49x100mm 

1093 

WINDSHIELD WIPER CONTROLLER 

A very useful circuit that will let you adjust the speed 

of your car wipers to the desired point according to 

the heaviness of the rain. It can be fitted very easily to 

any car.The kit includes the relay. Current: 50mA. 

V 

P.S. 

T 

PCB 

12 VDC 

CE 

33x86mm 

1095 

LEAD ACID BATTERY CHARGER 

This circuit is a lead-acid battery charger that 

incorporates a rectifier, a voltage regulator and an 

automatic electronic switch to put it in fast or slow 

charge state according to the condition of the battery 

connected to it. It has a visual indication of its state 

and it is mainly intended for continuous use in the 

maintenance of the batteries in alarm systems and 

emergency lights.Max. current: 100mA. 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 50x72mm 

1097 

CAR INTERFERENCE SUPPRESSOR (ASSEMBLED PCB) 

A simple circuit that was designed to eliminate the 

interference signals generated by a car engine.These 

signals are particularly annoying when trying to listen 

to weak radio broadcasts.The car renders very useful 

services to its owner. Unfortunately, it also produces a 

high level of radio frequency interference signals 

originating from the car’s generator, wipers, flash 

indicators, air conditioning etc. 

V 

P.S. 

T 

CE 

PCB 58x70mm 



1115 

COURTESY LIGHT DELAY 

CE 

A clever and useful circuit for the driver.When you 

enter the car and the doors are closed it keeps the 

interior lights on for a few seconds to give you time to 

put the key in the lock, fasten your seat-belt and start 

the car. Stop fumbling in the dark! The same delay is 

introduced when you leave the car giving you time to 

check the alarm system and see if you have forgotten 

something.The delay is adjustable.The circuit has been 

designed to work off the car battery and it is small 

enough to fit anywhere in the car. 

NEW DESIGN 

V 12 VDC 

P.S. 

T 

PCB 46x58mm 

1120 

R.P.M. INDICATOR WITH LEDs 

The electronic version of the most essential measuring 

instrument within a car. It is reliable and simple to 

construct.The small size makes the installation possible 

almost anywhere within a car. It provides a reading 

within the range of 0 to 7000 rpm.The display takes 

the form of a circular light bar made up by LEDs and 

provides a reading with a discrimination of 250 

revolutions per LED. Max. current: 130mA. 

V 

P.S. 

T 

PCB 

12 VDC 

54x54mm 

1143 

R.P.M. DIGITAL INDICATOR 

The most essential and most useful instrument needed 

for a car is offered in its electronic version.The circuit 

is reliable, highly accurate and easy to assemble.The 

engine revolutions are counted and the result is 

displayed on a four digit display. Engine revolutions in 

the range between 0 and 7000 r.p.m. are measured.The 

circuit can be installed in almost any car due to its 

small size. Dissipation current: 180mA. 

V 

P.S. 

T 

PCB 

12 VDC 

39x65mm 

1189 

REAR STOP - BRAKE LIGHTS FOR CARS 

The car manufacturers nowadays equip most of the 

cars with an addittional “STOP” light that is placed on 

V 12 VDC 

the top of the trunk or at the bottom of the rear 

window.This way, during braking, this specific light can 

be seen from more than one drivers that follow you, 

while the normal “STOP” lights are usually hidden by 

the following car. Unfortunately, older cars don’t have 

this accessory, but now you have the ability to get one. 

SUITABLE BOX Included 

P.S. 

T 

PCB 10x218mm 


PREAMPLIFIERS-MIXERS 

1010 

1023 

1024 

5-INPUTS STEREO MIXER 

A 5-input mixer with professional specifications. 

Suitable for DISCOS, Hi-Fi systems, FM transmitters 

etc. It uses professional sliding potentiometers to 

control the input levels. It has 2 PICK-UP inputs, 2 

TAPE or TUNER and a MICROPHONE input and also 

features a MONITOR output. Freq. response: 20Hz- 

15KHz (-3dB). Distortion: 0.05%..Output: 1V/47KOhm. 

Sensitivity: MIC 2mV, P.U. 3mV,TAPE or TUNER 150 

mV. 

DYNAMIC HEAD PREAMPLIFIER - RIAA 

A circuit specially designed for moving magnet PICK- 

UP heads. It incorporates RIAA equalisation and is of 

course STEREO. It can be combined with SMART KIT 

1032 (Stereo tone controls) to form the base of a Hi- 

Fi system. Sensitivity: 2-5mV. Output level: 150mV. Input 

impedance: 47 KOhm. Frequency response: 20Hz- 

20KHz. 


MICROPHONE PREAMPLIFIER 

A MICRO preamplifier suitable for dynamic, 

electrostatic and electret (condenser) microphones. 

Very useful for transmitters, DISCOS, P.A. systems etc. 

It will work very well with the SMART KIT 1052, (3 

input mixer). Frequency response: 50Hz-15KHz. 

Distortion: 0.5%. 

V 12 VDC 

P.S. 1061 

T 

PCB 165x220mm 

CE 

V 18-24 VDC 

P.S. 1068 

T 

PCB 60x60mm 

CE 

V 9-20 VDC 

P.S. 1061 

T 

PCB 40x45mm 

1050 

3-INPUTs Hi-Fi PREAMPLIFIER 

This is a complete STEREO preamplifier with tone 

controls, dynamic head stage with RIAA correction 

(3mV sensitivity),TAPE OUT (150mV),AUX input (200 

mV) and TAPE IN (200 mV). It also has a SCRATCH 

filter and a MONO-STEREO switch.The switches are 

push-button type and are incorporated in the printed 

circuit board. It can be used with any power amplifier. 

Very good value for money. Frequency response: 15Hz 

-30KHz. Output voltage: 1.5 V 

16 Internet site: http://www.smartkit.gr 

V 

P.S. 

T 

24 VDC 

PCB 72x275mm


1052 

3-INPUTs MONO MIXER 

This circuit is a 3-input MONO mixer with 

independent level control for every input. It also 

incorporates separate BASS and TREBLE controls. It 

can be used with SMART KITs 1023 and 1024 to make 

its inputs sensitive enough for MICROPHONE and P.U. 

Input sensitivity: 150mV. Max. current: 100mA. 

V 18 VDC 

P.S. 1068 

T 

PCB 60x185mm 

1054 

4-INPUTs INSTRUMENT MIXER 

A kit for the musician. It is very useful as it will let you 

use 4 instruments at the same time on the same 

amplifier input. It has very good mixing quality despite 

the simplicity of the circuit and its very low power 

consumption makes it possible to use the mixer with a 

small 9V battery for a long time. Max. current: 20 mA. 

V 

P.S. 

T 

PCB 

9 VDC 

30x61mm 

1057 

CASSETTE HEAD PREAMPLIFIER 

A preamplifier using an IC capable of raising the low 

output of the cassette head to a level that will drive 

the TAPE IN input of a stereo preamplifier. It works 

well with any STEREO preamplifier.Very low distortion, 

high amplification factor and very good frequency 

response. Frequency response: 20Hz-40KHz. Max 

current: 20mA. 

V 7-20 VDC 

P.S. 1061 

T 

PCB 43x50mm 

1070 

Hi-Fi PREAMPLIFIER 

A preamplifier designed for the most demanding Hi-Fi 

listeners. It uses the very latest technology in audio 

circuits as it is fully DC controlled. It is completely 

immune to noise from potentiometers or from pick up 

noise from long control wires as they are only carrying 

control voltages and not audio signals. Max. current: 

30mA. Output level: 1V. Frequency response: 20Hz- 

20KHz. 

V 12 VDC 

P.S. 1061 

T 

PCB 61x185mm 



1071 

4-INPUTs SELECTOR FOR 1070 

A circuit designed to complement the SMART KIT 

1070 using the same DC control technology and 

compatible input and output levels with the 1070. It 

incorporates a moving magnet preamplifier stage with 

RIAA equalisation. It can switch up to 4 inputs (P.U., 

TUNER,AUX and TAPE) and also incorporates a TAPE 

OUT for recordings. Current 30mA. Frequency 

response: 5Hz-22KHz. 

V 12 VDC 

P.S. 1061 

T 

PCB 68x130mm 

1126 

3 MICROPHONE INPUTS PREAMPLIFIER 

A preamplifier for microphones equipped with BASS, 

TREBLE and VOLUME controls. Used together with 

SMART KIT 1127 it can form a complete microphone 

mixer of professional quality. Input sensitivity: 2.5- 

300mV. Max. current: 50mA. 

V 

P.S. 

T 

PCB 

30 VDC 

49x112mm 

1127 

TONE CONTROLS FOR 1126 

This is the MASTER unit that in combination with one 

or more SMART KIT 1126 units can form a complete 

MICROPHONE MIXER CONSOLE with individual and 

master controls. It has MASTER BASS,TREBLE and 

VOLUME controls. Max. current: 50mA. Input 

sensitivity: 2.5-300mV. 

V 

P.S. 

T 

PCB 

30 VDC 

46x100mm 

1166 

SUPER RIAA PREAMPLIFIER 

With the spreading of the CD players, many 

manufacturers of amplifiers and mini sound systems 

have a tendency to remove the phono input from their 

products.As a result, the old but good pick ups cannot 

operate with these machines, and many LP collections 

remain useless.The problem can be solved the best 

way using this application.The circuit is based on the 

special and supplemented circuit LM833 that ensures 

low noise, high sound quality and reliability, 

consumption 70mA. 


V 

P.S. 

T 

2x15 VAC 

2x15VAC/0,5A 

PCB 83x91mm

PREAMPLIFIERS-AMPLIFER 

1193 

MICROPHONE PREAMPLIFIER 

A small and useful circuit that amplifies the microphone 

signal to line level. It accepts dynamic and condenser 

microphone with internal supply. It also operates the 3 

pole-condenser microphones. It has two inputs with 

different sensitivity.The circuit is based on the 

integrated circuit LM833 that ensures low noise, low 

distortion, high sound quality and reliability.The gain 

can be adjusted by a trimmer to avoid overloading and 

distortion. 

V 

P.S. 

T 

PCB 

9 VDC H 

44x70mm 

1025 

Hi-Fi AMPLIFIER 7 W 

A simple but very useful and powerful amplifier, 

offering great performance at a very modest price. It 

can be matched very well with SMART KITS 1023 and 

1024. It can be used in intercoms, portable audio 

systems, in the car etc. Max.current: 500mA. Frequency 


CE 

V 12-18 VDC 

P.S. 1061 

T 

PCB 55x55mm 

1033 


An amplifier for the most demanding constructors. It 

combines well with kits 1032, 1002, 1016, 1050.The 

circuit incorporates electronic protection for the 

output transistors. Output power: 60W/8Ohm or 

80W/4Ohm (RMS). Quiescent current: 60mA. Max. 

current: 4A.Amplification factor: 24. Sensitivity: 0.707- 

1.5V. Freq. response: 5-35KHz. Distortion: 1KHz - 

0.05%, 10KHz - 0.08%, 20 KHz - 0.1%. 

CE 

V ±40 VDC 

P.S. 1060 

T 

PCB 77x110mm 

1040 


This is a general purpose Hi-Fi amplifier. It can be 

combined well with SMART KIT 1023 and 1024. It can 

also be used with any STEREO preamplifier from 

SMART KIT and with two 1040s you can make a very 

good low power STEREO Hi-Fi system.Very good 

value for money. Input sensitivity: 50mV. Output 

impedance: 2-8Ohm. Freq. response: 40Hz-15KHz. 

Quiescent current: 20 mA. 

CE 

V 12-15 VDC 

P.S. 1169 

T 

PCB 27x60mm 


1041 

AMPLIFERS 


A 25 Watt power amplifier, with very high quality, 

suitable for the car or for portable P.A. applications. 

Frequency response: 40Hz-20KHz. Input sensitivity: 

100mV. Max. current: 2A. Quiescent current: 20mA. 

Load impedance: 2-8Ohm. Output power: 25 Watts. 

CE 

V 12-15 VDC 

P.S. 1169 

T 

PCB 

36x74mm 

1046 

BOOSTER AMPLIFIER 2x25 W 

A very well designed power amplifier suitable to be 

used in the car as a power booster for the existing 

stereo system. It can be connected directly to the 

output of the car STEREO (cassette player or radio). It 

can also be used together with SMART KITs 1002 and 

1044.The heatsinks are included in the kit. Quiescent 

current: 50mA. Input sensitivity: 200mV. Load 

impedance: 4Ohm. 

CE 

V 12 VDC 

P.S. 1171 

T 

PCB 75x76mm 

1077 

Hi-Fi AMPLIFIER 100 Watt 

The most powerful Hi-Fi amplifier in the SMART KIT 

range. It uses very high quality DARLINGTON power 

transistors in the output, it is fully protected and the 

sound quality is exceptionally good. It is offered 

complete with a large heatsink. It can be used with the 

SMART KITs 1023, 1032, 1043, 1050, 1070, 1071. 

Frequency response: 10Hz-45KHz. Distortion: 0.05%. 

CE 

V ±40 VDC 

P.S. 1060 

T 

PCB 80x120 

1100 

INTEGRATED STEREO AMPLIFIER 2x18 W 

A complete STEREO amplifier in one board. It has 4 

inputs (P.U.,AUX,TUNER and TAPE). It is designed with 

the latest technology and uses DC for the BASS, 

TREBLE, BALANCE and VOLUME CONTROLS. Ideal 

for use as a booster for WALKMAN. Frequency 

response 20Hz-20KHz with only 0.5% distortion.The 

power supply is included in the amplifier board. 


V 2x14 VAC 

P.S. 

T 2x14VAC/4A 

PCB 126x247mm 


AMPLIFERS 

1109 

Hi-Fi AMPLIFIER 40W 

A Hi-Fi amplifier with very good specifications despite 

its apparent simplicity. It can be used together with 

SMART KITs 1070, and 1071 to make a modern 

STEREO amplifier of very high quality. It has very good 

frequency response and low distortion. Frequency 

response: 40Hz-50KHz. Distortion: 0.5%. Input 

sensitivity: 850mV. 

V 

P.S. 

T 

PCB 

35-45 VDC 

48x89mm 

1113 

1161 

Hi-Fi AMPLIFIER 2x18 W 

A STEREO power amplifier for small systems. It is the 

same circuit as in SMART KIT 1100 but without the 

preamplifier and the power supply sections. It can also 

be used as a booster for existing small systems or to 

drive a second pair of speakers besides the ones 

already connected to the existing system. Input 

sensitivity: 250mV. Input impedance: 500KOhm. 

Distortion: 0.5%. Signal to noise ratio: 80 dB. Frequency 



2x2W PORTABLE WALKMAN AMPLIFIER 

A simple and reliable stereo amplifier 2X2 Watts, 

suitable for any walkman or any other sound source 

where we need an amplifier even by using the level 

signal of the headphones output. It’s size is very small 

making it ideal for portable application. Max current 

dissipation 400mA, output power 2X2 W/4Ohm 

frequency response 20Hz-20KHz, typical distortion 

0.2%. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

±18 VDC 

46x128mm 

6-9 VDC 

34x61mm 

1199 

HI FI AMPLIFIER 2 x 70W / 8Ohm ( 2 x 100W/4Ohm) 

Based on the old and reliable components. It is 

structured from two separate amplifiers that can give 

you up to 100 watts / 4Ohm.With the help of a 

jumper you can join the two amplifiers in one with an 

out put up to 200 watts /4Ohm.The kit also includes a 

delay start and current limit for loudspeaker 

protection.To adjust the bias is very easy and is done 

with the help of two leds. 

V 

P.S. 

T 

2x36 VDC 

PCB 140x165mm 


1018 

GUITAR TREMOLO 

MUSIC 

TREMOLO with professional specifications. It creates 

fantastic effects with any electric guitar. A very useful 

project for any music enthusiast, suitable for amateurs 

and professionals alike.The amount of TREMOLO and 

the speed are adjustable.The power consumption is 

very low. Input sens.: 200mV.TREMOLO freq.: 1-20Hz. 

Max. current: 20mA 

V 

P.S. 

T 

PCB 

9VDC H 

51x100mm 

1053 

ELECTRONIC METRONOME 

A kit for musicians, to help them keep their tempo. 

Easy and simple to built, yet very accurate and 

repeatable. Save a lot of money compared to similar 

commercially available metronomes.The tempo can be 

adjusted with a potentiometer.The speaker is included 

in the kit. Due to low current consumption the battery 

lasts long time. Max. current: 30 mA. Output power: 

0,5W. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

30x32mm 

1091 

GUITAR PREAMP.WITH TONE CONTROLS 

This is a preamplifier with very good specifications that 

will satisfy even the most demanding users. It has BASS 

and TREBLE controls and can be connected to any 

amplifier.The circuit is small enough to be placed inside 

the guitar. It uses the well known IC TL-082. Max. 


V 9-12 VDC 

P.S. 1061 

T 

PCB 53x53mm 


«OHM’s LOW» 

SYMBOLS 

U = Voltage in Volts 

I 

= Current in Amperes 

R = Resistant in Ohms 

P 

= Power in Watts 


1012 

SOUND 

SPRING REVERBERATION 

A high quality reverberation unit with Hi-Fi 

specifications. It can be connected to Hi-Fi systems to 

create interesting sound effects or it can be used to 

create the feeling of “depth” in microphone 

installations or other similar applications.The amount 

of reverberation is adjustable. 

V 12 VDC 

P.S. 1061 

T 

PCB 42x86mm 

1016 

LOUDSPEAKER PROTECTION UNIT 

An ideal accessory for any audio system. It can be used 

with any amplifier from SMART KIT or any other 

amplifier having an output between 1 and 100 Watts. It 

protects your speakers against peak signals and you 

from unpleasant and expensive surprises! It completely 

eliminates the possibility of loud speaker burning due 

to overloading. Maximum current: 50mA. Quiescent 

current: 2mA. Maximum input power: 100 Watts. 

V 9-15 VDC 

P.S. 1061 

T 

PCB 59x74mm 

1032 

STEREO TONE CONTROLS 

This circuit is an active STEREO tone control that will 

accept in its input signals from 150 mV to 1V and 

provides in the output 0.5V to 3.5V.The distortion is 

0.02% and the frequency response is 10Hz to 25KHz. It 

can be used with the kits 1023 and 1024 to make a 

complete STEREO Hi-Fi amplifier, without much 

money. 

V 18-30 VDC 

P.S. 1068 

T 

PCB 52x100mm 

1043 

LOUDNESS STEREO UNIT 

An active loudness STEREO unit that will add a new 

dimension to your listening pleasure especially at the 

lower output levels. Suitable for all the amplifiers and 

preamplifiers in the Smart Kit line.Very low distortion 

and noise. Max.current: 50mA. 

CE 

V 9-28 VDC 

P.S. 1068 

T 

PCB 50x87mm 


1044 

GRAPHIC EQUALIZER 

SOUND 

A graphic equalizer with five bands over the audio 

spectrum.A must for those who wish to listen to real 

Hi-Fi sound and want the best frequency response with 

a minimum of distortion. Ideal for the car.Adjustment 

frequencies: 60, 250, 1000, 4000, and 16000 Hz. Max. 

current: 100mA. Output level: 1Vpp. 

V 12 VDC 

P.S. 1061 

T 

PCB 48x144mm 

1112 

LOUDSPEAKER PROTECTION WITH DELAY 

A very useful circuit for those who built their own 

amplifiers. It will protect the speakers from 

overloading, DC, and other dangerous signals. It 

protects both channels at the same time and also 

connects the speakers with the amplifier a short time 

after the power is turned ON, thus protecting the 

speakers from the “THUMP” that is usually heard and 

which can sometimes destroy your expensive speakers. 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 52x68mm 

1149 

DIGITAL SOUND RECORDER 

Digital recording and sound reproduction unit, ideal for 

message announcements, alarm systems, automatic 

sellers and also wherever there is a need for message 

announcement without the use of the classic cassette 

recorder. Maximum recording time: 2 minutes. Sampling 

frequency: 16, 32 and 64 KHz. Power dissipation: 

150mA. Output power: 0,5W 8Ohm. 

V 9 VDC 

P.S. 1169 

T 

PCB 75x175mm 

1170 

DIGITAL MESSAGE RECORDER / PLAYER 

The kit is a digital cassette player that is capable to 

store the message in the memory of an IC. It is 

suitable for exhibition halls, presentation halls, railway 

stations, bus stations and generally in every place 

where the announcement of short messages is very 

important. 

CE 

V 9-15 VDC 

P.S. 1061 

T 

PCB 112x166mm 


SOUND EFFECTS 

1035 

SPACE SOUND EFFECTS 

Mysterious sounds and other science fiction-like effects 

for modern people living in the space age.A really 

fascinating project. In the output of the circuit you can 

connect any audio power amplifier. Maximum current: 

40m A. Output voltage: 2 Vpp 

CE 

V 12 VDC 

P.S. 1061 

T 

PCB 

45x46mm 

1045 

SOUND EFFECTS GENERATOR 

An easy to built project that will create many 

interesting sound effects. It can produce many different 

sounds from bird chirps to sirens.The sound 

combinations which are produced are practically 

infinite! Max. current: 200mA. Output power: 0.05 

Watt. 

V 

P.S. 

T 

PCB 

CE 

9 VDC H 

54x85mm 


1131 

ROBOT VOICE 

A very interesting circuit that will distort your voice 

and will make it similar to the mechanical voice of a 

ROBOT.Very good sound effect for DISCOs, radio 

stations and for playing jokes to your friends who will 

think that you have a robot at home which answers 

the phone for you! Max. current: 100mA. 

V 9 VDC H 

P.S. 1169 

T 

PCB 42x71mm 

TRANSISTORS PIN OUTS 


1004 

AUTOMATION 

LIGHT SWITCH 

A simple and inexpensive circuit, suitable for many 

applications like the automatic switching of the lights in 

a shop-window or a room, according to the ambient 

light level, for alarm systems, production control, 

remote controls etc.The circuit uses a light dependent 

resistor that changes its value according to the amount 

of light it receives, and three transistors which are used 

to amplify the signal from the LDR and operate a relay. 

V 12VDC 

P.S. 1061 

T 

PCB 30x63mm 

1005 

TOUCH SWITCH 

A circuit capable of opening and closing any circuit by 

simply touching its contacts.The relay contacts are 

rated at 250V 2A. It can also be used for remote 

control applications.The “heart” of the circuit is the 

integrated circuit CD 4001.A small transistor is driven 

from the output of the IC and this in turn is used to 

activate the relay. Max. current: 30 mA. 

CE 

V 12VDC 

P.S. 1061 

T 

PCB 44x55mm 

1047 

SOUND SWITCH 

This is a switch that can be operated by means of 

sound. It can be used to turn an apparatus ON and 

OFF from a distance. Suitable for alarm systems. It can 

be adjusted to respond to voice, hand clapping or 

almost any sound.Very sensitive.When activated it will 

stay in this condition until it receives another sound. 

CE 

V 9-12VDC 

P.S. 1061 

T 

PCB 47x74mm 

1048 


ELECTRONIC THERMOSTAT 

This is a switch that will be activated when its sensor 

reaches a certain temperature.The sensor is a very 

sensitive THERMISTOR.The circuit consists of three 

transistors, the last of which is used to activate a relay 

having 250V/2A contacts.The temperature that will 

trigger the circuit can be adjusted.Very useful in safety 

devices when a certain temperature level must be kept. 

CE 

V 12-15VDC 

P.S. 1061 

T 

PCB 29x63mm 


AUTOMATION 

1072 

AUTOMATIC MAINS LIGHT SWITCH 

This is a very simple automatic switch that is capable 

of switching a light bulb on when the ambient light 

level is decreased.The bulb is switched off again as 

soon as the ambient light level is restored. It is ideal for 

switching normal light bulb loads.The circuit is very 

simple as it consists of only six components.The P.C.B. 

is so small that it can easily fitted within the housing of 

any normal electrical switch. 

V 

P.S. 

T 

PCB 

230VAC 

21x33mm 

1073 

VOX FOR AUTOMATIC RECORDINGS 

This is a voice activated switch and can be used on 

transmitters, CB radio etc. making unnecessary to use 

the PRESS TO TALK switch, something very useful 

when we need hands free operation. It can also be 

used for voice recordings to switch the tape recorder 

ON and OFF whenever somebody says something, thus 

making the tape last much longer. It has a MIC input, a 

delay circuit and adjustable sensitivity. 

CE 

V 12VDC 

P.S. 1061 

T 

PCB 35x73mm 

1076 

ELECTRONIC THERMOSTAT SWITCH 

A simple circuit for use in control applications that also 

take the ambient temperature into account. It 

combines a low constructional cost with high accuracy. 

The circuit may be set to operate within a range from 

-10ºC up to +125ºC. It may be used in either domestic 

or industrial applications. 

V 

P.S. 

T 

PCB 

CE 

230VAC 

67x88mm 

1080 

LIQUID LEVEL SENSOR / RAIN ALARM 

A very useful circuit in applications requiring the 

effectiveness of a fluid level. It can also be used as a 

rain detector.With a suitable sensor that you can easily 

construct. Max. current: 60mA. Relay: 250V/2A 

V 12VDC 

P.S. 1061 

T 

PCB 

31x57mm 


1081 

AUTOMATION 

FLUID LEVEL DETECTOR 

A simple but reliable circuit that was designed for using 

in applications requiring the detection of a fluid level. It 

is capable of detecting the absence, the presence and 

the level of water and other polar liquids. It may be 

used within automated fluid distributors, washing 

machines, irrigation systems, water and fuel tanks, 

burner systems, heating installations, etc. 

V 

P.S. 

T 

PCB 

CE 

230VAC 

53x77mm 

1158 

REMOTE CONTROL RECEIVER 

The kit in co-operation with the transmitter Smart kit 

1159 can be used in many applications such as garage 

doors, car alarms, door lock etc.There is a choice of 

different codes by means of a dip switch. 

NEW DESIGN 

V 12VDC 

P.S. 1061 

T 

PCB 

54x120mm 

1159 

REMOTE CONTROL TRANSMITTER 

This transmitter in co-operation with the receiver 

smart kit 1158 can be used in many applications such 

as garage doors, car alarms, door lock etc.There is a 

choice of different codes by means of a dip switch. 

NEW DESIGN 

V 12VDC H 

P.S. 

T 

PCB 

30x40mm 

1168 

SUITABLE BOX Included 

LED ACTIVATED SWITCH 

A simple circuit that many of you have often dreamed 

of in the past.We may have a circuit that displays an 

indication by means of a LED and we wish to trigger 

another circuit from this indication.This circuit does 

exactly this job.. It can be triggered from 1.4VDC and 

has an output capable of handling 2A/250VAC by 

means of a relay. It can be used in automation 

applications, control rooms, vox circuits etc. 

V 

P.S. 

T 

PCB 

CE 

6-12VDC 

37x45mm 


LIGHT MODULATORS 

1006 

MUSIC TO LIGHT EFFECT 800 W 

Light effects, ideal to give the rhythm to any party or 

disco without much money.Very simple construction. 

Success and satisfaction guaranteed.Very safe operation 

as it uses an optoisolator as a coupling device between 

the audio and the mains controlling stages of the 

circuit. A plastic small case is supplied with the kit. 

Power handling: up to 800 Watts. 

V 

P.S. 

T 

PCB 

230VAC 

37x55mm 


1014 

3-CH.WIRELESS LIGHT MODULATOR 

A 3-channel light modulator that can be used in any 

situation and with no matter which sound source, as it 

requires no electrical connection with the power 

amplifier.The kit includes an electret microphone of 

very high sensitivity that is used to pick up the music 

that will modulate the light.As there is no connection 

between the unit and the amplifier, there is no danger 

for your expensive Hi-Fi system. Separate sensitivity 

control, channel. Power handling: 1200 Watts. 


V 

P.S. 

T 

PCB 

230VAC 

54x112mm 

1026 

1037 

RUNNING LIGHTS 

An exciting light effect with 12 LEDs.The printed 

circuit board is designed in such a way as to be 

possible, by simply inserting 3 TRIACs in their 

respective places, to use 220 V filament bulbs instead of 

LEDs, making this kit suitable for professional 

applications.The speed of rotation as well as its 

direction can be easily adjusted. Ideal for parties, 

DISCOs, shop-windows and eye-catching signs. 

Consumption: 100 mA. Output power: 3x800 Watts. 


DISCO STROBO LIGHT 

CE 

V 9-15 VDC 

P.S. 1061 

T 

PCB 54x112mm 

The best of all light effects, previously available only as 

professional equipment for Discos, now available to 

amateur constructors at a very reasonable price.A 

very bright strobe that will give the illusion of 

interrupted motion.The rhythm is variable and you can 

add a second XENON tube to increase the light 

output. Strobe frequency: 1-60 Hz. 

V 

P.S. 

T 

PCB 

230VAC 

60x68mm 




1104 

SWEET LITTLE HEART 

A unique light effect with a heart-like shape.The heart 

is made up of 20 LEDs that are turned on and off 

periodically.This kit may be used to decorate a corner 

of your personal room or living-room, the windscreen 

of the car, a store, or even, it can be donated as a 

token of some special feeling. Current consumption: 

100mA. No adjustment is required. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

60x63mm 

1132 

SUPERLIGHT- 3CH. LIGHT EFFECT 

This is a useful construction for light effects. It can 

easily be connected with an amplifier from 1-100 Watt 

or another audio equipment.Three optocouplers are 

used to link this modulator with the audio source 

isolating at the same time the two circuits completely. 

It has three channels for low, mid and high frequencies. 

Power: 600W/channel. Input voltage: 2,5-28V AF. 

Current dissipation 4VA. Input resistance: 500Kohm. 

V 

P.S. 

T 

PCB 

230VAC 

102x112mm 

1133 

STEREO SOUND TO LIGHT MODULATOR 

This is a useful circuit which is used to control one or 

more lamps and make them follow the rhythm of the 

music.Two optocouplers are used to link the 

modulator to the sound source isolating at the same 

time the two circuits completely. Maximum current 4A 

per channel. Maximum output power: 800W per 

channel. Input sensitivity: 2-60 Watts. 


V 

P.S. 

T 

PCB 

230VAC 

55x64mm 

1153 

STAR LIGHT 

An exciting light effect with 57 led’s which have been 

placed in eight rows and they look like a star.The “starlight” 

begins “growing” from the centre to its edges 

and after that disappears.The speed of “growing” can 

be easily adjusted.You can connect a second star light 

or another light effect that you have constructed.There 

are eight channels to connect the second star or other 

effect. Ideal for the Christmas tree, parties, 

shopwindows, end eye-catching signs. 


V 

5VDC 

P.S. 1169 

T 

PCB 

CE 

120X127mm


1157 

SPECIAL LIGHT EFFECTS UNIT 

A unit which is ideal for the driving of various light 

signs for shops. The signs may contain letters formed 

by LEDs, in order to create messages like “MERRY 

CHRISTMAS”,“SALE”,“SPECIAL OFFER” etc. It is also 

possible to create decorative signs like stars and 

hearts! 

V 

9-14VDC 

P.S. 1063 

T 

PCB 

62x83mm 

70x86mm 

1162 

DOUBLE HEART FLASHER 

A well-known light effect in a different version.Two 

hearts formed by LEDs, simulate an electronic optical 

heart beating. Suitable for the windscreen decoration, 

room-corner or wherever your fantasy guides you. 

Current dissipation: 50mA. 

CE 

V 9-15VDC 

P.S. 1061 

T 

PCB 

72x74mm 

1175 

CHRISTMAS TREE WITH LEDs 

Make your Christmas brighter by assembling this light 

effect unit. It is an electronic Christmas tree with 19 

LEDs which turn on/off successively and will be used 

to decorate your home, your shop or your car.You can 

offer it as a gift to your friends or you can send it as a 

Christmas card. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

87x130mm 

1176 

JINGLE BELLS WITH LEDs 

Two Christmas jingle bells with 24 LEDs which turn 

on/off successively and will be used to decorate your 

home, your shop or your car.You can offer it as a gift 

to your friends or you can send it as a Christmas card. 

It plays also your favorite Christmas songs 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

85x120mm 


1059 

1078 

1119 

1122 

TELEPHONE 

TELEPHONE AMPLIFIER 

A very sensitive amplifier that will amplify the voice 

through a telephone pick-up coil (included in the kit) 

and will let you follow a telephone conversation 

without having to hold the telephone receiver in your 

ear. It is also very useful when more than one person 

have to listen to what is said on the phone. Power out: 

1W. Max. current: 120mA. 


PROTECTION FROM MALICIOUS CALLS 

A simple and useful circuit that will ensure your 

protection from malicious calls, with an easy and 

certain way that you are able to change at any 

moment.The heart of the circuit is the PIC 

microproccessor 16C56, that cuts off the first rings 

(adjustable from 3 to 12), thereby the caller will hang 

up thinking that you’re absent.You are going to hear 

the call after the rings that you chose to cut off. 

TELEPHONE LINE RECORDING 

A very clever device that will activate a cassette 

recorder when the telephone receiver is lifted. It is 

very useful for the recording of commercial orders 

over the telephone, conversations, security etc. It 

draws its power from the remote control line of the 

cassette recorder, which should be a model which 

works off at least 6VDC. 


TELEPHONE CALL RELAY 

A simple device that can be used to give a signal or to 

V 

operate an electrical apparatus every time the 

telephone rings.Very useful for noisy places, where a 

P.S. 

light signal or a siren can draw the attention to the 

phone better than the telephone bell, or for cases 

T 

where the telephone is in such a place that cannot be 

heard and you need a secondary bell. It does not 

PCB 64x64mm 

require any power supply and the relay contacts are 

rated at 250V/2A. 


☎ 


V 

CE 

9-12VDC 

P.S. 1061 

T 

PCB 

V 

43x69mm 

9-12VDC 

P.S. 1061 

T 

PCB 

V 

P.S. 

T 

PCB 

☎ 

65x105mm 

☎ 

CE 

40x56mm 

☎ 

CE

TELEPHONE 

1125 

1130 

1155 

PULSE TELEPHONE LOCK 

A project that will help you control the use of your 

telephone and keep your telephone bill low. It can be 

connected on the telephone line and disable the 

dialling beyond the 8th digit.Thus it is impossible for 

anyone to make a long distance call unless you allow it. 

It can also disable dialling from the 5th digit so it is 

impossible to make anything but operator calls. It 

draws its power from the telephone line.Very useful 

for public telephones, in businesses, shops etc. 


TELEPHONE “BUG” DETECTOR 

If your telephone has “bugs” this circuit may help you 

“kill” them. It will warn you if somebody is eaves 

dropping on your telephone line by means of some 

device connected on your line.The circuit draws its 

power from the telephone line and can be left on the 

telephone line continuously, without fear of hampering 

the normal use of the telephone. 

TELEPHONE SCRAMBLER 

The device is built around the FX224 IC. It can be used 

in simplex or duplex mode and can be connected to 

any kind of wireless telephone, CB or VHF transceiver. 

The same kit can be used as a receiver and transmitter 

as well. 

V 

P.S. 

T 

PCB 50x57mm 

☎ 

V 

P.S. 

T 

PCB 30x40mm 

☎ 

V 12VDC 

P.S. 1061 

T 

1167 

TELEPHONE LINES PRIORITY SWITCH 

It is well known that more than one telephone lines 

exist in an office in our days. However, what will 

happen if we want to connect a telephone voice 

recorder device?. In a such case, you have to connect 

many devices or the circuit which is suggested and 

permits the connection of a fax, modem or an 

answering device with more than one telephone lines. 

Internet site: http://www.smartkit.gr 33 

PCB 

V 

111x120mm 

12VDC 

P.S. 1061 

T 

PCB 

☎ 

52x80mm 

☎

1182 

1185 

TELEPHONE 

MUSICAL HOLD ON 

A very smart circuit for having music in the telephone, 

when you put the caller in “hold”. It is a useful 

alternative solution for telephone sets that don’t have 

this option.The construction is based on an IC that 

generates a known melody. It also gives you the ability 

to record your own melody from a tape player or CD. 

There is no need for power supply as it is connected in 

parallel with the phone line. 

TELEPHONE IN USE INDICATION 

A simple, useful and cheap solution with no need for 

external power supply, that shows you if the line is 

busy. It can also show incoming calls without ringing. 

Useful for old type telephones, but also for units put in 

parallel to show if someone else is using the line. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

57x72mm 

☎ 

9VDC H 

1186 

1194 

EIGHT CHANNEL REMOTE CONTROL BY TELEPHONE 

A useful circuit that gives you the ability to control 8 

different devices via telephone line from any distance. 

Each channel has its relay and a LED indicating the 

specific device activation.The circuit is based on the 

microproccessor PIC16C57 that provides accuracy and 

reliability. It is easy to program by the DTMF tones that 

almost all of today’s telephone sets provide. It includes 

matching transformer and plugs for connecting in the 

telephone line. 

READ/WRITE TELEPHONE NUMBER 

A project that you will find very useful beside your 

telephone. It has the ability to restore the last 84 

dialed phone numbers consisting of 12 digits each.They 

can be displayed in a 16 digits LCD display (included). 

The unit has also an output for recording any 

conversation in a common tape recorder. 

PCB 

V 

30x61mm 

☎ 

12VDC 

P.S. 1061 

T 

PCB 126x134mm 

☎ 

Coming soon!!! 


VU - METERS 

1002 

VU-METER WITH LEDs 

It can be easily adapted to any amplifier or preamplifier 

in a car or at home. It scores over conventional VU 

METERS in many ways, as it gives a more accurate 

reading, it has adjustable sensitivity and last but not 

least it improves aesthetically the amplifier front panel! 

It can be used with all the amplifiers and preamplifiers 

of SMART KIT. 

CE 

V 12-18VDC 

P.S. 1061 

T 

PCB 45x117mm 

1039 

STEREO VU-METER 

A project that will help you monitor easily and 

accurately the output of your amplifier. Suitable for any 

amplifier from 0.1 to 100 Watts RMS. It is a “must” for 

every amplifier, especially if the Hi-Fi system is also 

used for tape recordings.The kit includes the two 

instruments.The whole circuit is small enough to be 

fitted with no special difficulty in any existing amplifier 

case. 

CE 

V 12VDC 

P.S. 1061 

T 

PCB 33x87mm 

1067 

STEREO VU-METER WITH LEDs 

A very good VU-METER that can be used with any 

STEREO amplifier. Suitable for all the amplifier projects 

of SMART KIT, like the 1033, 1046, 1077, 1133 etc. 

V 12VDC 

P.S. 1061 

T 

PCB 

78x165mm 

1102 

STEREO VU-METER WITH 14 LEDs 

Another VU-METER from SMART KIT but this may be 

the most advanced and the best looking of all. It has 

been designed for STEREO amplifiers and uses 15 

LEDs, placed in a straight line, 7 for each channel with 

the LED in the centre used as an ON indicator.The 

display is symmetrical, on either side of the central 

LED which is always on. It works with any amplifier 

from a few mW to 100 Watts. It can also be used in 

the car. 


V 

12VDC 

P.S. 1061 

T 

PCB 

48x171mm

1008 

INSTRUMENTS 

AF FUNCTION GENERATOR 

An audio frequency function generator capable of 

covering the frequency range between 20 Hz and 20 

KHz. It produces sinusoidal, triangular (sawtooth) and 

square waveforms. It can be used very well for 

accurate adjustments in the laboratory. It has separate 

level controls for each waveform shape and it can be 

easily set to give exactly the same signal level for each 

waveform at the same time. 

V 

P.S. 

T 

PCB 

CE 

24VAC 

24VAC/IA 

65x120mm 

1036 

TRANSISTOR TESTER 

This is a circuit that will help you sort the 

TRANSISTORS you have in your laboratory, and will 

also help you choose the best of them for your 

projects. It will also show you if the TRANSISTOR is 

PNP or NPN.The circuit can also be used to check 

some types of diodes.The printed circuit board is small 

and if you use a small box to put it in you will have a 

convenient and portable TRANSISTOR tester. 


V 

P.S. 

T 

PCB 

CE 

9VDC H 

35x43mm 

1042 

AF GENERATOR 250Hz - 16KHz 

An economical signal generator that will produce a 

square wave of up to 15 Volts amplitude.A very good 

solution for the amateur’s lab.The frequency can be 

varied between 250Hz and 16KHz. Building the kit is 

very simple and the setting up is very easy. 

Max.current: 50mA. 

CE 

V 5-15VDC 

P.S. 1061 

T 

PCB 35x44mm 

1087 

THYRISTOR - TRIAC TESTER 

This simple circuit proves itself as one of the most 

useful additions to your bench gear, as it will test 

accurately THYRISTORs and TRIACs, by opening and 

closing their gates and, at the same time, checking for 

open and short circuits. No amateur or professional 

laboratory should be without one. Max. current: 10mA. 

CE 

V 9VDC H 

P.S. 

T 

PCB 43x54mm 



INSTRUMENTS 

1098 

DIGITAL THERMOMETER WITH LCD 

A digital thermometer with liquid crystal display 

suitable for the measurement of temperatures from 

-30 to +125C. It is built around the 7106 ADC IC. 

It has a very low power consumption, approximately 

1.5mA, which makes possible the use of the 

thermometer with a small 9V battery that will last for 

many hours of continuous use. Max. current:10A. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

61x69mm 

1099 

DIGITAL VOLTMETER WITH LCD DISPLAY 

A digital voltmeter with LCD display, suitable for 

measuring voltages between 0 and +199 Volts.The well 

known 7106 integrated circuit is used for this 

purpose.There is a low power consumption and the 

instrument can therefore operate for hours from a 

common 9 Volt battery. Its constructional simplicity and 

its reliability make this instrument ideal for use as a 

PANEL METER in power supply units. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

60x65mm 

1103 

LED POWER METER 

An instrument with a LED display that can be 

connected to your speakers to monitor the active 

power output of your amplifier.The circuit does not 

require a power supply as it will draw its power from 

the output of the amplifier.A must for any Hi-Fi 

enthusiast as it is inexpensive, accurate and nice to 

look at! Suitable for amplifiers having a power output 

of up to 100 Watts. 

V 

P.S. 

T 

PCB 

CE 

31x45mm 

1105 

HUMIDITY METER WITH LCD 

A digital humidity meter with liquid crystal display 

suitable to measure the relative humidity from 

10-90 %.The circuit is built around a special humidity 

sensor made by PHILIPS, and nine other integrated 

circuits.The kit has two PCB’s –one for the main 

circuit and another for the liquid crystal display– which 

can placed separately. 

V 

P.S. 

T 

PCB 

9VDC H 

76x100mm 

54x63mm 


1110 

INSTRUMENTS 

OSCILLOSCOPE COMPONENT TESTER 

With this circuit you will be able to increase the 

testing possibilities of your oscilloscope with a feature 

found only in the most expensive models of the 

market. Using this circuit you will be able to test all the 

electronic components like: Diodes, Zeners,Transistors, 

Capacitors, Coils etc.The size of the board is small 

enough to fit easily in the case of any oscilloscope.The 

kit comes complete with the mains transformer. 

V 

P.S. 

T 

PCB 

8VAC 

8VAC/IA 

40x44mm 

1111 

LOGIC PROBE 

A must for those who work with digital circuits. It will 

detect and display logic states of “1” and “0” by lighting 

respective LEDs and will also give an indication with a 

third LED if it detects a pulse train. Suitable for TTL 

and CMOS circuits. Max. current: 20mA. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

20x80mm 

1116 

SIGNAL INJECTOR - SIGNAL TRACER 

A very useful instrument for those who work in 

electronics, professionals and amateurs alike. It is 

indispensable for the checking of amplifiers, 

preamplifiers, receivers and other electronic circuits. It 

is easy to use and can also be used as a continuity 

tester, for the testing of cables, PCB tracks etc. Max. 

Current: 50mA. 

V 

P.S. 

T 

PCB 

9VDC H 

40x91mm 

1137 

DIGITAL VOLTMETER WITH LED DISPLAYS 

A digital panel meter with four led displays for your 

laboratory. It uses the well known ICL 7106 analogue 

to digital converter IC.This integrated circuit 

incorporates in a 40 pin package all the circuitry 

necessary to translate an analogue quantity as voltage 

to digital information and also has the necessary driver 

circuit for the four led displays. Current drawn 200mA 

max. Measuring range: 0-200 Volts . 

V 

P.S. 

T 

PCB 

±5VDC 

45x83mm 


INSTRUMENTS 

1142 

DIGITAL VOLTMETER WITH LED DISPLAYS 

A digital panel meter with four led displays for your 

laboratory. It measures 0 to 200 VDC in four ranges. 0- 

200mV, 0-2V, 0-20V, 0-200V. Over range indication. Max 

current dissipation: 220mA. 

V 8-15VDC 

P.S. 1061 

T 

PCB 

70x121mm 

33x77mm 

1145 

TVI FILTER 

It is a high-pass filter that allows any frequency higher 

than 62 MHz to pass. It can be connected to any radio 

or TV receiver to offer you a perfect reception without 

interference. 

V 

P.S. 

T 

PCB 

40x49mm 

1152 

FREQUENCY METER 10Hz - 1MHz 

A reliable frequency meter for the laboratory. It counts 

with great accuracy from 1Hz to 1MHz covering the 

frequency areas of all the trade generators .The input 

circuit does not cause power drop to a generator that 

will be connected on its input or it will not also cause 

change of its frequency.The current dissipation is 

160mA. Digital readout of 5 digits, also feeding voltage 

reverse. 

V 

12VDC 

P.S. 1061 

T 

PCB 

70x121mm 

33x77mm 

BLACK 

FIRST 

DIGIT 

– 

SECOND 

DIGIT 

0 

MULTIPLIER 

x 1 

TOLLERANCE 

10% SILVER 

RESISTORS 

BROWN 

1 

1 

x 10 

5% 

GOLD 

RED 

2 

2 

x 100 

SECOND DIGIT 

MULTIPLIER 

ORANGE 

YELLOW 

3 

4 

3 

4 

x 1.000 

x 10.000 

FIRST DIGIT 

TOLLERANCE 

GREEN 

5 

5 

x 100.000 

BLUE 

6 

6 

x 1.000.000 

VIOLET 

7 

7 

Ö 10 

GREY 

8 

8 

WHITE 

9 

9 


ALARMS - SIRENS 

1003 

ELECTRONIC SIREN 5 W 

A powerful electronic siren with an impressive 5 Watt 

power output, suitable for alarm systems, cars, 

motorbikes etc. It consists of a multivibrator with two 

transistors and the amplifier stage consisting of another 

two transistors. Output power: 5 Watts. Frequency 

tone: 1.2 KHz. 

CE 

V 6-12VDC 

P.S. 1063 

T 

PCB 37x71mm 

1029 

4-SOUNDs ELECTRONIC SIREN 

An electronic siren with many applications. One of the 

output sounds is a single tone, while the others are 

polyphonic resembling the sounds of FBI, POLICE, or 

AMBULANCE sirens. In the output can be connected a 

loudspeaker or a “horn” speaker of 8-25Ohm 

impedance. Ideal for alarm systems in every situation. 

Output power: 8W. 

CE 

V 9-15VDC 

P.S. 1063 

T 

PCB 45x81mm 

1049 

ULTRASONIC RADAR 

A circuit that can be used as a movement detector in 

any closed space. It can be used as a sensor for any 

alarm system.The circuit operates off 12VDC so it is 

ideal for use in the car.The useful range of the radar is 

about 10 meters. 

V 12VDC 

P.S. 1061 

T 

CE 

PCB 

50x88mm 

1094 

HOME/SHOP ALARM SYSTEM 

A very good alarm system for houses and shops with 

professional specifications. It has adjustable entry and 

exit times and variable alarm duration. It has four 

different branches (2 delayed and 2 with immediate 

alarm) with open or closed loop. It also has a battery 

backup circuit which uses Lead-Acid accumulators and 

charges them automatically. 

CE 

V 10VAC 

P.S. 

T 10VAC/2A 

PCB 140x140mm 



1114 

ELECTRONIC LOCK 

An electronic combination lock with 9 keys, suitable 

for alarm systems, security devices etc. in houses, cars, 

businesses etc. It is programmable and the keypad uses 

touch-switches. It can be easily connected to any 

existing alarm system. In the output it has a relay with 

250V/2A contacts. Quiescent current: 2mA. Max. 

current: 50 mA. 

V 

P.S. 

T 

PCB 

CE 

9VDC H 

78x88mm 

1128 

POWER FLASHER 12VDC 

A power flasher suitable for alarms, warning devices, 

car HAZARD lights, signalling devices etc. It uses a 

power transistor to drive the lamp and solid state 

circuitry to provide the necessary pulses which turn 

the lamp on and off. Lamp power: up to 20 Watts. 

V 12VDC 

P.S. 1161 

T 

CE 

PCB 

46x100mm 

1140 

1150 

5 ZONE ALARM SYSTEM 

The state -of- the art in security systems.An integrated 

security system that consists of 5 independent zones. 

One delay zone,Three direct zones and one for 24 

hours protection.The entry and exit time are 

adjustable from 15 to 60 seconds and you have also 

the ability to adjust the alarm time from 30 seconds to 

2 minutes.All the zones are terminated in a 4,7 KOhm 

resistor for shortcut protection. 

The system can also support a 12V/7Ah lid battery in 

order to be independent even in black out. 

PORTABLE ALARM 

A small alarm that may be installed anywhere and 

protect all sorts of things.The smallest possible 

movement is capable of activating the alarm which 

sounds until the owner comes to disarm it. Suitable to 

protect anything that may be left unattended for a little 

while and needs to be protected, like handbags, 

suitcases, open drawers, bicycles, trolleys etc.The kit 

includes a mercury switch, and the buzzer. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

17VAC 

17VAC/2A 

120x165mm 

CE 

9VDC H 

20x51mm 



1177 

PROGRAMMABLE ELECTRONIC LOCK 

A simple and easy to use circuit that enables you to 

improve security by controlling access to prohibited 

areas.The circuit is based on the microproccessor 

PIC16C54 that provides accuracy and reliability with 

1.000.000 different codes and memory back up. Easy 

programming by the user, with the ability of having one 

master and six low level access codes.The appliance 

activates an alarm system after 3 consecutive attempts 

to input wrong code numbers. 

V 12-14VDC 

P.S. 1061 

T 

PCB 55x85mm 

1184 

EMERGENCY LIGHT 

A useful and simple circuit for having light in cases of 

black out. If you’re afraid of darkness, waiting for the 

power to come back, SMART is offering you this circuit 

of automatic control for emergency 12V lights with 

maximum power 50W.The circuit also provides a 

12V/6Ah battery charger.The Mb battery is necessary 

when the lights go out and is used in homes and public 

places. It is also obligated by the low for restaurants, 

hotels and shops to show the emergency exits 

maximum load 50W. 

V 

P.S. 

T 

PCB 

15VAC 

15VAC/1A 

55x66mm 

1197 

2 ZONE ALARM SYSTEM 

The best value for money security system.A security 

system that consists of 2 independent zones. One 

delay and one direct zone.The entry and exit time as 

well as the alarm time are standard. 

Both zones have shortcut protection. 

The system can also support a 12V/3Ah lid battery in 

order to be independent even in black out. 

V 

P.S. 

T 

PCB 

17VAC 

17VAC/IA 

80x95mm 

BLACK 

FIRST 

DIGIT 

– 

SECOND 

DIGIT 

0 

MULTIPLIER TOLLERANCE VOLTAGE 

x 1 

± 20% 

250 V 

CAPACITORS 

BROWN 

1 

1 

x 10 

±1% 

400 V 

RED 

2 

2 

x 100 

±2% 

630 V 

OPERATING VOLTAGE 

ORANGE 

YELLOW 

GREEN 

BLUE 

VIOLET 

3 

4 

5 

6 

7 

3 

4 

5 

6 

7 

x 1.000 

x 10.000 

x 100.000 

±5% 

± 10% 

FIRST DIGIT 

SECOND DIGIT 

MULTIPLIER 

TOLLERANCE 

GREY 

8 

8 

WHITE 

9 

9 


CONVERTERS - CHARGERS 

1027 

Ni-Cad BATTERY CHARGER 

Using this circuit you can easily charge any Ni-Cad 

battery from 50 to 400 mA charging current.You can 

easily charge more than one battery at a time.The 

charging current can be selected according to the 

battery you are going to charge. It is absolutely safe for 

your expensive rechargeable batteries. Charging 

current: 50-400 mA (selectable). 

V 

P.S. 

T 

PCB 

CE 

12-24VAC 

2x12VAC/0,5A 

56x128mm 

1065 

INVERTER 12VDC - 220VAC 50 Hz 

A useful project for those who like camping and 

caravaning but they don’t like leaving modern facilities 

behind. It can supply loads of up to 100 Watts.The kit 

includes the heatsinks for the power transistors. 

The output frequency is 50Hz. 

V 

P.S. 

T 

PCB 

CE 

12VDC 

2x10VAC/20A 

48x72mm 

1069 

12VDC FLUORESCENCE 

This circuit is useful for the outdoors and camping. It is 

powered from a car battery and can light any 

fluorescent lamp in 8-40 watt size.The special design of 

the circuit ensures the maximum illumination without 

causing any spikes in the mains. Dissipation Current: 

1.3A(max) Frequency: 58KHz. 

V 

P.S. 

T 

PCB 

12-14VDC 

46x162mm 

1085 

DC CONVERTER 12 TO 6/7.5/9V 

With this circuit you will be able to use any small 

radio, cassette recorder,WALKMAN etc. in your car 

without having to use batteries, because its operating 

voltage is lower than 12VDC. It can also be used as a 

power supply with 3 different, selectable, output 

voltages with a single 12V transformer. Output current: 

800mA. Output voltage: 6, 7.5, 9VDC. 

V 

P.S. 

T 

PCB 

12VDC 

CE 

40x85mm 


POWER SUPPLIES 

1007 

1056 

POWER SUPPLY 3-30V/2.5A 

This is a variable, stabilised power supply for 

laboratory use. It is very reliable and therefore suitable 

for professional or amateur applications. No laboratory 

should be without one! It is short circuit protected and 

the kit comes complete with a large heatsink. It uses 

the well known VOLTAGE REGULATOR IC LM-723 

and two transistors. 


STABILISED POWER SUPPLY 8-20V 8A 

A heavy duty power supply capable of powering even 

the most power demanding circuits in your laboratory 

with pure, clean, stable DC current. Up to 150 Watts 

output power.The circuit incorporates special 

protection filters against RF from transmitters and 

LINEAR amplifiers, making it ideal for such applications. 

The ideal power supply for SMART KITs 1021, 1031 

and 1017.The kit comes complete with heatsinks. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

24 VAC 

24VAC/3A 

55x112mm 

24 VAC 

24VAC/8A 

67x155mm 

1060 

POWER SUPPLY ±40V/8A 

The ideal power supply for amplifiers like SMART KIT 

1033 or 1077. If the amplifier is used for a MONO 

system, a 2x28VAC/4A transformer is sufficient. If you 

plan to supply a stereo amplifier, the transformer 

should have an 8A rating. 

V 

P.S. 

T 

PCB 

CE 

2x28 VAC 

2x28VAC/8A 

44x69mm 

1061 

STABILISED POWER SUPPLY 12V 0.5A 

One of the most popular power supplies in our range 

of kits. It only requires a 12VAC 0.5A transformer. It 

uses a 7812 VOLTAGE REGULATOR IC. It is the ideal 

power supply for SMART KITs 1002, 1004, 1005, 1009, 

1012, 1013, 1016, 1020, 1025, 1026, 1035, 1039, 1042, 

1048, 1049, 1055, 1057, 1059, 1067, 1070, 1071, 1080, 

1083, 1084, 1112, 1116, 1124, and for any other 

application where you may need a stabilised 12VDC 

voltage of up to 500mA. 

V 

P.S. 

T 

PCB 

12 VAC 

12VAC/0,5A 

36x75mm 


CE


1062 

TTLs STABILISED POWER SUPPLY 

A stabilised power supply suitable for projects with 

TTL integrated circuits. It uses the 7805 voltage 

regulator IC. 

V 

P.S. 

T 

PCB 

CE 

9 VAC 

9VAC/0,5A 

36x75mm 

1063 

POWER SUPPLY 12V/2A 

A general purpose power supply for those cases where 

a cheap and powerful 12V supply is required. It is the 

right supply for SMART KIT 1003, 1029, 1040, 1041, 

1046, 1048, 1128. 

V 

P.S. 

T 

PCB 

CE 

12 VAC 

12VAC/2A 

53x59mm 

1064 

STABILISED POWER SUPPLY ±12V/0.5A 

A symmetrical stabilised power supply for many 

different applications.With a different wiring can also 

supply 24 VDC. 

V 

P.S. 

T 

PCB 

CE 

2x12 VAC 

2x12VAC/0,5A 

44x70mm 

1068 

POWER SUPPLY 18V/0.5A 

A general purpose stabilised power supply with an 

output of 18V 0.5A. It uses the 7818 voltage regulator 

IC. Suitable for SMART KIT 1023, 1024, 1028, 1038, 

1052. 

V 

P.S. 

T 

PCB 

18 VAC 

18VAC/0,5A 

36x75mm 



1096 

STABILISED POWER SUPPLY 2-30VDC/5A CE 

An easy to build, powerful, stabilised power supply with 

variable output voltage from 2 to 30 Volts and a 

maximum power rating of 5A. It covers almost all the 

voltages needed in the electronic laboratory.The kit 

comes complete with a large heatsink for the power 

transistors. It uses the well known LM317 voltage 

regulator. Output voltage: 2-30V Max. current: 5A. 


NEW DESIGN 

V 24 VAC 

P.S. 

T 24VAC/5A 

PCB 77x150mm 

1138 

STABILISED POWER SUPPLY 0-30VDC/3A 

An easy to build, powerful, stabilised power supply with 

variable output voltage from 0 to 30 Volts and a 

maximum power rating of 3A. It covers almost all the 

voltages needed in the electronic laboratory.The kit 

comes complete with a large heatsink for the power 

transistor. It uses three op-amps and four transistors. 

V 

P.S. 

T 

PCB 

24 VAC 

24VAC/3A 

85x123mm 


1169 

POWER SUPPLY 3- 4.5-6- 9-12VDC / 1.5A CE 

This is a universal stabilised power supply. Depending 

on the transformer that is used in the input it gives the 

related DC output at a power rating of up to 1.5A. It 

can be used as power supply for many electronic 

devices such as radios, tape recorders, portable TV sets 

etc. 

NEW DESIGN 

V 12 VAC 

P.S. 

T 12VAC/1,5A 

PCB 85x123mm 

1171 

RFI POWER SUPPLY 12-14V/3A 

The RF devices (transmitters, receivers) demand special 

power supplies in order to avoid many serious 

problems (noise, overheating, standing waves, e.t.c.). 

This power supply does not permit the passing of high 

frequencies and delivers a voltage of 12-14VDC and a 

current of 3A.The circuit includes thermal protection, 

short circuit protection and electronic stabilisation. 

V 

P.S. 

T 

PCB 

CE 

18 VAC 

18VAC/3A 

72x82mm 


VARIOUS 

1015 

ELECTRONIC MOSQUITO REPELLER 

CE 

A modern and clean way to keep mosquitoes away 

during summer nights. It is a multivibrator with an 

output of 5 KHz.This frequency makes mosquitoes go 

away.The circuit has very low power consumption and 

the battery will last for about a month of continuous 

use.Max. current: 0.001A. Output frequency: 5 KHz. 

NEW DESIGN 

V 1,5VDCH 

P.S. 

T 

PCB 20x30mm 

1022 

1075 

METAL DETECTOR 

A metal detector suitable for locating pipes and cables 

in walls, floors etc. Its range reaches 15-20 cm.The kit 

comes complete with a handy case.You may not find 

lost treasures with this little device (unless they are 

not buried very deep!) but it will certainly help you 

locate pipes and mains wirings before making holes on 

the wall or the floor avoiding accidents and a lot of 

inconvenience. 


ELECTRONIC DICE WITH LEDs 

The modern way to play games that require the use of 

dice.The throws are shown by 7 LEDs arranged in 

such a way as to remind the faces of real dice. Power 

consumption is very low and a small 9V battery will 

last for a long time. Max. current: 100mA. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

CE 

9 VDC H 

39x64mm 

CE 

9 VDC H 

21x78mm 


1089 

LED FLASHER - 555 TESTER 

A simple and useful project when you need a flasher 

like in alarm systems, warning devices, indicators, 

signalling, toys etc.The circuit uses the well known 

TIMER IC 555 and besides all its other applications it 

can be used as a tester for the 555. Max. current: 

30mA. 

CE 

V 12VDC 

P.S. 1061 

T 

PCB 35x49mm 


1090 

STRESS METER 

VARIOUS 

This circuit can form the basis for a game which apart 

from giving you hours of fun will also show you how 

nervous is the player. As a game it requires nerves of 

steel dexterity and ...great patience. Great fun for 

family gatherings, parties etc.The circuit can also be 

used as a BUZZER in alarms and warning systems. 

Output: 50mW. Max. current: 60mA. 

V 

P.S. 

T 

PCB 

9 VDC H 

42x61mm 

1101 

1107 

DOLLAR TESTER 

It is a common secret that the market is full of fake 

USA dollars.This kit will help you to distinguish the 

forged notes from the real ones by detecting the only 

feature that is impossible to copy:The special magnetic 

ink which is used to print some parts of the note.The 

production of this ink is strictly controlled and it is 

impossible for forgers to get hold of it.Very useful for 

exchange bureaus, tourist businesses and shops. 


ELECTRONIC 1-X-2 

There are many different ways and systems to bet in 

the pools.We propose an altogether different system 

that will use electronics, statistics and luck to give you 

an electronic “prediction” of the expected results of 

the football matches. Max current: 40mA. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

9 VDC H 

32x42mm 

CE 

9 VDC H 

54x66mm 


1123 

MORSE CODE GENERATOR 

A simple and useful circuit for those who wish to learn 

the Morse code.The output frequency can be adjusted 

anywhere between 250Hz and 16KHz. It is a very easy 

project suitable even for beginners. It only requires a 

Morse Keyer and a miniature speaker. Maximum 

current: 15mA. Output power: 100mW. 

CE 

V 9 VDC H 

P.S. 

T 

PCB 37x45mm 



VARIOUS 

1124 

ELECTRONIC BELL 

An electronic bell suitable for use at home as a 

doorbell, as a second bell for the telephone (in 

combination with SMART KIT 1122), or in any other 

application that may require a sound signal. It can also 

be used together with a sensor to give a warning that 

somebody is approaching the entrance of a house. Max. 



CE 

V 9-12VDC 

P.S. 1061 

T 

PCB 41x71mm 

1129 

1156 

NEGATIVE ION GENERATOR 

The use of this circuit will greatly benefit your health 

and will give you a feeling of comfort. It helps cleaning 

the air from dust, pollen, smoke and pollution.The 

increased concentration of negative ions in the air 

makes it feel fresher, brings a feeling of well being, helps 

in reducing stress and effectively reduces the severity 

of symptoms in some respiratory troubles. It is also 

beneficial to animals and plants. Current: 100mA. 

SUITABLE BOX: 2129 

LOTTO - FORTUNE MACHINE 

A modern way to find the six lucky numbers.This 

circuit is a pseudo random number generator which 

can give a number from 1 to 49 by the push-button. 

The circuit can work with more or less than 49 

numbers depending on the country that it concerns. 

Two led displays show the lucky number. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

230VAC 

120x132 

9 VDC H 

56x61mm 

1191 

ELECTRONIC PUT’N TAKE 

The well known game that we all play on new year’s 

eve in its electronic edition.All the indications:“put 1, 

put 2, put everyone, take 1, take 2and tak’em all” are 

displayed.The circuit also produces a tone from a small 

loudspeaker, that sounds like when you play the original 

game. Now you have the ability to play this old game 

with a new electronic way. 

V 

P.S. 

T 

PCB 

9 VDC H 

58x70mm 


VARIOUS - DIMMERS 

1192 

1195 

1030 

ELECTRONIC ROULETTE 

The simplest and most entertaining way to play 

roulette and have fun with your friends. By gambling on 

this new kit of Smart Kit Electronics, you’ll be 

introduced to the magic world of electronics and enjoy 

many games with the electronic roulette which 

includes simulation of a spinning ball, sound and works 

with a microcontroller which guarantee reliability and 

transparency.All you have to put in, is the will to have 

some serious fun. 

MULTI TONE CHIME 

A simple kit for your house or office. It replaces your 

old door bell at a small cost.The circuit is based on the 

SAE800 that can produce up to three different tones 

similar the airports’s announcement.The circuit has 

small dimensions and can be used with the already 

existing button. Power supply 9-12 VAC. 

LIGHT DIMMER 


A dimmer with many applications at home, laboratory, 

office, etc. It can be used to control the lights in a 

bedroom, children’s rooms, parties etc.The circuit is 

simple and the small size of the board makes it 

possible to fit almost everywhere. Load: 800 Watts. 

V 

P.S. 

T 

PCB 

V 

P.S. 

T 

PCB 

9 VDC H 

123x126mm 

230VAC 

46x57mm 

1051 

TOUCH DIMMER 

This is a very modern dimmer that only needs a light 

touch to operate.A light tap on its sensor will turn the 

light ON or OFF.A longer touch will either increase or 

decrease the light level.The circuit incorporates a 

memory and switches the light on at exactly the same 

level it was before switching it off.Very safe and stable 

operation. Max. current: 3.5 A. 

V 

P.S. 

T 

PCB 

230VAC 

46x65mm 

32x39mm 


DIMMERS 

1074 

DRILL SPEED CONTROLLER 

A well thought project that will let you adjust the 

speed of your electric drill according to the job at 

hand. Suitable for drills of up to 700 Watts. 

V 

P.S. 

230VAC 

T 

PCB 

48x65mm 

SUITABLE BOX: 2074 

1134 

AUTOMATIC DIMMER 

It is a circuit that adjusts the lighting of a room 

according to the environment lighting.The more the 

outside lighting lows down the more the room lighting 

raises and vice versa, thanks to a sensitive 

photoresistor.The circuit is used to poultry-farming, 

design studios as well as child room. 

V 

P.S. 

T 

PCB 

230VAC 

80x115mm 

1139 

MINI DRILL SPEED CONTROLLER 

An easy to build stabilised special power supply for all 

the hand mini drills.A useful project that lets you 

adjust the speed of your mini drill according to the job 

at hand.The speed is not affected by the hardness of 

the material you drill.The output voltage and sensitivity 

can be adjusted by two potentiometers.The circuit is 

built around the well known regulator IC L200. Output 

voltage: 4-26VDC. Output current: 3-5A. 

V 

P.S. 

T 

PCB 

20VAC 

20VAC/3A 

50x100mm 

TRIAC LED REGULATOR DIODE 

TRANSISTOR 

K 

A 

A 

K 

TOP 

VIEW 

BOTTOM 

VIEW 

8 5 14 8 16 

K 

A 

1 4 1 7 1 8 


IN 

A 

K

Computer Aplication 

1164 

1196 

8CH TIMER CONTROLLED BY P.C. 

Using this Kit you can control 8 devices.The kit is 

connected to the serial port of your computer and 

defines when will turn on or off each one of the 8 

devices. For example you can turn on/off the lights, the 

air conditioning or the alarm at the desired time.There 

are 3 options - manual, periodic, automatic - for the 

handling of the Kit. Power handling up to 500 Watt 

/channel.The software is also included in the same 

package. 

ADC COMPUTER INTERFACE 

A circuit that will expand your horizons for more 

efficiency in your PC. It is about an A/D converter 

build around the ADC0804.The circuit is provided with 

the software for best processing from the PC and is 

connected to the parallel port giving you by this 

connection three digital outputs. It can also coopertate 

with microcontrollers. Power supply 5 VDC. 


USEFUL INFORMATION 

V 12 VDC 

P.S. 1061 

T 

PCB 109x130mm 

Looking at the catalogue you will notice the existence of 

the following signs: 

The meaning of each of the signs is explained in the 

following lines: 

The kit has the CE approval accdording to the 

EC regulations (European Directive 89/336/EEC). 

The kit operates/produce 220V or a High 

Voltage.Therefore must be constructed by skilled 

technicians following safety standard as described by 

international specs and regulations. 

The kit transmits radio frequencies.The operation 

and use of such devices may be controlled by regulations 

that differ from country to country.The compliance with 

the corresponding legislation of each country is obvious, 

The kit must be connected to the network of 

PTT.The operation and the use of such 

devices may differ from country to country.The 

compliance to the correspponding legislation of each 

country is obvious. 

Beside each kit you will find useful information 

quick form.There you can see at a glance the 

required voltage (V), the suitable kit to use as a 

power supply (P.S.), the required transformer (T) 

and the PCB dimensions (PCB). 

Smart kits are sold as stand alone training kits. If they are used as parts of a larger assembly causing a damage, our 

company assumes no responsibility.

Smart Kit catalogue (En)

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