septemBer - octoBer â¢ 2008 - Electronic Goldmine

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SALE ITEMS SEPTEMBER/OCTOBER 2008 Super Cooler! Peltier Heat Sink & Fan Super Cooler! Giant assembly consists of a Peltier effect cooling module mounted inside a giant heat sink assembly. It was made for a recreational cooler and features a large aluminum heat sink which gets very cold. Next to the large heat sink is a heat insulator which is attached to the smaller heat sink which releases the heat as the large heat sink cools. We include a 12VDC fan which you place near the “hot” side to increase the cooling from the large heat sink. Overall approximate size is about 5”L x 5”W x 3.9” Thick. Has red and black flexible leads for power. Operates on 12V to 13.8VDC @ 6Amps. This is the most powerful cooling module we have ever offered! G16657 $35.00 SALE! $29.95/set Peltier Cooling Module High quality Peltier cooling module made by Melcor Corporation. It features a 1 3/16” sq. peltier module mounted to a 2 1/4” sq black anodized heat sink. It has 4 metal clamps that would allow it to be mounted to a circuit board and pressed to the module against the CPU. Can operate from 6VDC @ 1.5 amps to provide a nice cold surface. Cold surface has copper metal surface. Module has color coded leads and connector for power hookup. Brand New! G2201 $11.95 SALE! $9.95 ea. 12VDC Fan / Heatsink Combo Combo fan/heatsink features a built in 50mm 12VDC @ .11Amp fan (which can be removed from heatsink). Fan is mounted inside a special holder, which fits over a 55mm square heatsink. The heatsink was designed to cool microprocessors. Made for Dell. Part# 9075R. New - blowout price! G13970 $0.99 SALE! $0.79 ea. Papst RG90-18/12N/19 12VDC Biscuit Fan Large high air flow volume biscuit type fan made by Papst. These are about 5 5/16” sq. x 1 1/2” thick and feature heavy duty construction, flexible wire leads and an alarm lead for use to indicate fan malfunction. Biscuit type provides large volume of air flow! Brand new, heavy duty and highest quality. Operates on 10 to 15VDC. Rated 580ma at 12VDC. Type RG90-18/12n/19. G9817 $5.95 SALE! $3.49 ea. Giant Box of Broken Solar Cells Silicon solar cells can still produce lots of power even when they are in odd shapes from being broken. We are offering a great selection of these broken cells. Most will be able to individually produce enough energy to drive our solar motor (G4453) or connect several together to make “mini solar panels” capable of charging nicad batteries, or operating a radio, a fan, display, small solar race car, etc. We give you a 3 9/16” x 2 9/16” x 1” box of broken solar cells. (About 3 times the amount of cells in the G4496 package). Includes soldering instructions. G4497 $9.95 SALE! $8.95 ea. Polycrystalline Solar Cell Assortment Assortment of various size Polycrystalline silicon solar cells. You get 4 cells each capable of delivering high current to power motors, etc. from the sun. Each cell no mater how large puts out .5V open circuit voltage, however the size determines the amount of short circuit current. In this assortment it will vary from 150ma for the smallest up to 950ma for the largest. The smallest cell is 2 1/4” x 7/16” and the largest is 4 1/2” x 1 1/2”. May have slight edge chips. Complete with soldering instructions. These would cost over $14 if you purchased them individually. G2242 $8.95 SALE! $7.95 Premium 2Amp Silicon Solar Cell These are beautiful single crystal solar cells that produce .5V open circuit voltage and 2A short circuit current. Size 3.8” sq. We were told that these were made by a new continuous molten ribbon process. They appear to be better quality than most silicon solar cells we see. These may have slight surface imperfections on grid lines but this does not affect performance. G15645 $5.95 SALE! $4.95 ea. 15VDC 0.15Amp 6” x 12” Glass Solar Panel Compact 6” x 12” glass solar panel is perfect for powering hundreds of electronic devices and recharging 12VDC rechargeable batteries including lead acid types. Includes a piece of special solder, a diode and two metal tabs that you solder to the panel with the piece of special solder. Minimum output is 15VDC open circuit voltage and 0.150Amp short circuit current (may be higher). Panel may have slight cosmetic defects (edge chips, discoloration, etc.) however, these will not effect output. G16390 $13.95 SALE! $9.95 ea. 15VDC 0.1Amp 4” x 12” Glass Solar Panel Compact 4” x 12” glass solar panel is perfect for charging 12 volt batteries, or powering small electronic devices. Includes a piece of special solder, a diode and two metal tabs that you solder to the panel with the piece of special solder. Minimum output is 15VDC open circuit voltage and 0.1Amp short circuit current (may be higher). Panel may have slight cosmetic defects (edge chips, discoloration, etc.) however, these will not effect output. G16391 $10.95 SALE! $8.95 ea. Compact Lightweight Powerful 3.6V 70mA Solar Panel This 2.4”sq. x 0.08” glass solar panel is made with a thin film of Copper Indium di Selenide (CIS). They have two metal ribbons already attached for hookup. The output is about 3.6VDC open circuit voltage and 70mA short circuit current. These are very lightweight (only 13 grams). Most of our smaller low voltage DC motors operate nicely from this powerful compact panel. If you buy more than one, you can connect them in a series to increase the voltage or parallel to increase the current. Great for making small solar powered cars, robots, solar powered fans, etc. G16394 $3.50 SALE! $2.99 ea. 8 “AA” Battery Holder Black plastic holder for 8 standard “AA” batteries. G754 $1.00 SALE! $0.79 ea. Lambda Regulated Power Supply Part # PWG0050 by Lambda features Regulated +5VDC at 7amps and +3.3VDC at 10amps output. Input is 100VAC to 240VAC 50-60HZ. Open frame switching supply with .156” headers for output and input. Size only 6” x 3 1/2” x 1 1/4”. Weighs 0.82 lbs. Brand new in manufacturer’s box. G12705 $12.95 SALE! $8.95 ea. 12VDC 100mA Wall Adapter 12VDC 100mA Wall Adapter Small wall adapter features a subminiature 2.5mm stereo plug. Center is +. Has long cable. Size about 2.16” L x 1.7” W x 1.6” Deep. Plugs into standard 120VAC wall outlet. New in white box. G15216 $0.99 SALE! $0.69 ea. Fused Cigarette Plug Assembly This assembly is ready for you to add your wire leads. It is brand new and screws apart to allow you to make your own custom power cord. Fuse is 3Amp. Black plastic body with strain relief. G15375 $0.99 SALE! $0.69 ea. 3VDC 350ma Power Adapter Originally manufactured for Game- Boy® by Radio Shack. This unique switching power supply operates on 120VAC and puts out 3VDC @350mA. AC prongs fold flat for compact storage. Overall size of adapter is 1.9” W x 2.7” T x 0.65”D. Features a 7 foot long cable with a 2.5mm barrel plug. Purple case color. Brand new item at a blowout price! G16319 $1.99 SALE! $1.29 ea. Keystone Metal “AA” Battery Holder Reliable metal type battery holder for one “AA” sized battery features two solder tabs for hookup. Keystone quality and design make for trouble free performance. Features two mounting holes on 1.3” centers. G16152 $1.00 SALE! $0.69 ea. Micro Beam Solar Panel 2.3VDC 3.5mA Micro sized .47”L x .25”W x .04” Thick shingle type solar panel puts out about 2.3 VDC open circuit voltage and about 3.5mA short circuit current. Has tiny wire leads attached and is great for power micro powering projects such as beam robots. We are not sure whether this is silicon or selenium material, however the output is stated. G16621 $1.49 SALE! $1.25 ea. Handspring Li-Ion PDA Battery Type HND 14-0024-00 rated 3.7V 850mAh. Features tiny connector and peel & stick mounting. Size only 2”L x 1.33”W x .21”Thick. Brand new and sold elsewhere online for $49.00! For Treo 270 and Treo 300 series. Manufactured by Handspring. G15693 $19.95 SALE! $2.99 ea. NiMH Rechargeable Battery for 9V Applications Long life rechargeable nickel metal hydride battery made for 9V applications is rated 7.2V @ 150mAh. These are new, made by GP® type 15F7H, and can be recharged over and over again. We find they work great in all the 9V battery powered items we use here at the Goldmine. G16250 $1.79 SALE! $1.39 ea. All prices in this flyer Expire 11/01/08 Place your order online 24/7 at: www.goldmine–elec.com or call toll free: 1-800-445-0697 Page
SALE ITEMS SEPTEMBER/OCTOBER 2008 Super Power 12VDC Gear Motor Sealed case gear motor was made for automotive applications. Operates on 12VDC and features .52”Dia. x .5”L shaft with 8 spines (or ridges). The shaft rotates at approximately 5RPM and has very high torque. We are very impressed by how much torque is produced by this motor - it is quite powerful! Unloaded current draw is 20mA at 12VDC. Overall size including mounting ears about 4.2” x 3.2” x 1.1”Thick (without shaft). Part # PP-GF30 made by TRW. Has built in 2 pin male connector, however we do not have the matching female connector. G16034 $7.95 SALE! $5.95 ea. Faulhaber Precision 12VDC Micromotor Precision 12VDC micromotor by Faulhaber of Germany is type 2342L012CR. Size about 1 1/8” x 1 1/8” (front face x 2 1/4”Long -excluding shaft and gear). Shaft on one end is 3/8”Long x 2mm Dia. Shaft on other end has an 18 tooth 3/8”Dia. gear. These are precision, high torque (stall torque = 80mNm). Speed (no load) 8100rpm, current .075Amp (no load), motor resistance 1.9ohms. Motor has flexible red & black leads terminating in a 2 slot connector. To reverse direction just reverse battery polarity. This motor is 80% efficient and has an output power rating of 17Watts. We even connected this motor to a tiny 3V coin battery and it operated fine! Brand new, worth a fortune! Great for robotics. G16026 $7.95 SALE! $4.95 ea. Small 12VDC Johnson Motor Small 0.94” Dia. x 1.21”L Johnson motor operates from 6VDC up to 24VDC and features a 0.08” Dia. x 0.40”L shaft. has 2 color coded flexible 1.5”L leads with “push on” quick connect terminals. Brand new! Manufactured by Johnson. G14072 $0.99 SALE! $0.49 ea. Small Efficient DC Motor Small Efficient 1/2V up to 9VDC Motor - This small motor is so efficient it will even operate on one solar cell (.5V). Size of motor about .95” Dia. x .55” L. Has .40” L shaft that is .08” Dia. Brand new-has solder eyelets and flexible color coded leads (either set can be used). Manufactured by Samhongsa. G13622 $1.29 SALE! $0.99 ea. Robot Builders Bonanza! Motor and Wheels Here’s a retail blister card which contains 4 rubber tires, 4 chrome wheels, 1 small DC motor, 4 screws and 4 spacers. This is a robot builders dream come true. The small, high RPM motor can operate from 1.5VDC up to 6VDC and with a little imagination you should be able to use these parts as the basic building block for a robot. Originally, they were designed as a “tune up” parts set for small toy race cars. Brand new in blister pack. Sorry, no robot plans to use these available. G9816 $1.75 SALE! $0.99 ea. 4 Gear Set Plus Timing Belt 4 plastic gears with various teeth, each has a 6mm inner bore, however one of the inner bores is for a “D” shaft. This gear also has the timing belt teeth. The outer gear that has the timing belt teeth is a compound gear which has a larger gear molded onto it. The larger gear meshes with the remaining 2 gears. The belt is about 5” in diameter. New but no data or other information available. G15902 $4.95 SALE! $2.95 ea. 12VDC Gearhead Motor Compact metal case gearhead motor features very high torque and 0.87” dia. 26 tooth gear on end. Can operate on as low as 3VDC. Size about 2.3”L x 1.58” (including gearhead). Has 2 solder eyelets for power. To reverse direction, simply reverse polarity. G14728 $7.95 SALE $3.99 ea. Bertsch Micro Motor Small odd shaped motor by Bertsch has a unique armature. Motor is about 0.93”L x 0.67”W x 0.39”D. It has a 1mm diameter x 2mm long shaft and two solder eyelets for connection. Operates on 3VDC up to 9VDC. Sorry, no other specs available. G16260 $3.49 SALE $1.99 ea. Ledex Miniature 12VDC Tubular Solenoid Ledex 12VDC tubular solenoid pushes a 1” long plunger pin. Size of solenoid about 1” long x 0.5”Dia. Has 3/8” threaded bushing for panel mounting. Our tests indicate the pin can push out about 0.4”. Has 1” long insulated leads with mounting nut. Coil resistance is 48 ohms and it requires about 250mA to operate. G16333 $2.95 SALE! $1.99 ea. Solenoid/Mechanical Clutch Assembly Metal assembly consists of a rotating 3/4” gear that can rotate in one direction but is prevented by a plastic cog mechanism from rotating in a reverse direction until power is applied to the solenoid. Operates on 24VDC. Metal bracket is about 3.6” x 1.6” x 2.1”. Solenoid can be removed and used separately. New in box. G16327 $2.49 SALE! $1.99 ea. Long Stainless Steel Tube Stainless steel thin wall tube is 0.24”Dia. x 10 5/16” Long. The tube is strong and light. It has a small hole about 0.57” from one end and another small hole about 0.80” from the other end. Brand new. G16340 $1.99 SALE! $1.49 ea. Thrust Bearing Thrust Bearing - Consists of 11 steel ball bearings in a metal race. Each ball bearing is about 1/4” Dia. and the overall size of the race is about 1.27” in outer diameter. We have soldered metal posts to the race and attached the posts to the bottom of a circuit board to make a free wheelin’ robot! G13613 $1.00 SALE! $0.49 ea. Panasonic CR2032 Lithium Coin Battery Fresh full power popular CR2032 lithium coin battery is used in many PDAs, calculators, etc., for power and memory backups. These are without the tabs which is the most common type CR2032 in use. Panasonic is one of the best brands for lithium coin batteries. Rated 3V @ 210mAh. G16335 $1.29 SALE! $0.99 ea. HA-200-100 200Amp 100mVDC High Current Ammeter Shunt HA-200-100 ammeter shunt features 200Amp capacity for a 100 millivolt DC meter. Size about 6”L x 1.25”W x 1.35”H. Brand new. G16661 $14.95 SALE! $12.95 ea. Night Popper Robot Kit The Night Popper waits until it gets dark and then it starts its random exploring. While it explores it sets off a brilliant almost firework looking display from it’s 3 white lamps and emits a crackling popping sound from its on board piezo speaker. Features 2 small DC motors, 2 photodarlington transistors, a relay/ CDS cell circuit and 4 drive transistors. The special bonus with this robot is that you get 2 snap off PC boards with 21 components that you solder in before building the robot. By doing this, you can gain ample soldering experience before building the Night Popper. Robot itself is about 3 1/8” square. With the learn to solder boards attached the PC board is 4” square. Requires 2 AA batteries and 1 9V battery (not included). With all parts and instructions. Skill Level 1. G13696 $17.95 SALE! $15.95 ea. Learn to Solder Kit This kit has 30 components to solder in giving the student ample soldering experience. The first 20 components to be soldered are used to gain soldering experience, but the last 10 components, when soldered in, make up a bright red and yellow alternating LED flasher! The LED flasher portion is built after the student has soldered in the 20 practice components, which include: capacitors, a transistor, resistors, and an IC socket. The student, when he completes his kit, should have developed good soldering techniques and has a functioning LED flasher to show for his/her efforts. This kit requires one 9V battery (not included). Size of board: 4.75” x 3”. Complete with all parts (including practice parts for soldering) and complete soldering instructions. C6445 $8.50 SALE! $7.00 ea. SCI-FI Sound Effects “THERIMIN” Kit Produce all kinds of weird sound effects with this small simple to build kit. Utilizes 2 light sensors: one controls the frequency and the other modulates (varies) the sound. Simple one IC circuit with built in speaker and an RCA jack so you can send the sound to your amplifier if desired. Simply use your hands to produce some of the strangest, spookiest sounds you’ll ever want to hear! Operates from one 9V battery (not included). Size of PC board 3 1/2” x 1 1/4”. Complete with all parts, PC board and instructions. Skill level 1. This kit requires soldering of components to the PC board while building. C6841 $11.65 SALE! $8.95 ea. NASA Space Heater Assortment These were made for various NASA space missions and consist of a wafer thin approximately 33.5”L x 0.25” wide see thru brown material. Sealed inside are two heater elements. Each one has a tag which states the low power resistance for the two elements (the first three tags we saw were 82.5ohms, 203.2ohms and 515.8ohms). They also have the power ratings listed on each tag. In the above example it was 1 Watt, 2.4 Watts and 0.90 Watts -Maximum still air dissipation at 25°C. By Ohms Law you can calculate voltage and current for the heaters you receive. Each assortment will have three different resistance/Watt ratings however all are about the same length and width (we believe). All are in sealed manufacturer packages and each must have cost the government a fortune! Assortment of 3. G16346 $12.00 SALE! $8.95 All prices in this flyer Expire 11/01/08 Place your order online 24/7 at: www.goldmine–elec.com or call toll free: 1-800-445-0697 Page
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