HELP US SAVE TREES! - Electronic Goldmine

Sale Items
November/December 2009
Place your Order ONLINE at:
-or- TOLL FREE 1-800-445-0697
www.goldmine–elec.com
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Tiny Pressure Sensor
Made by Motorola, these were made to measure
pressure ranges that you would find in medical
devices (up to 300mm Hg). We are not sure of
the exact pressure range spec on this one but it is
similar to the MPX2011DT1 or MPX2301DT1 sensors. They
all have the same hookup. These are based on piezoresistive
technology. The case is the white plastic chip PAK and is only
.38”Tall x .26”W x .10”Thick. Has small fitting with a black
colored gel inside for mounting to your hose. The size of this
fitting is .123”Dia. The sensor is brand new on tape and reel.
They are marked with a customer specific number (not the
part #). The hookup is pin 1 Vcc, pin 2 (+) out, pin 3 (-) out,
pin 4 ground. Sorry no other details available but there is
schematics, app notes, etc on the internet for similar sensors.
Great experimenter item for building pressure sensing or
pressure activated devices.
G15473 $1.49 SALE! $0.99 ea.
Stanley Micro Tiny Phototransistor PS5022
Stanley phototransistor PS5022 features a
3.4mm diameter axial lead case with clear lens.
Specs: PC = 100mW, VCEC = 30V, IC = 30mA,
Peak Sensitivity = 880nm, Collector Emitted Dark
Current = .2µA, Photo Current = 2mA.
Great for various optical phototransistor projects!.
G17146 $1.25 SALE! $0.79 ea.
IR Receiver Module Assortment
Consists of 5 different factory new IR
modules. Each is very sensitive to IR
signals from remote controls. Great for
experimentation, remote control, robots
etc. We have no specs or data for these but we will include
one representative schematic for driving a relay with one of the
modules (using this you should be able to figure out the rest of
them as each has only 3 leads). Brand new - Prime.
G12958 $5.00 SALE! $2.99 ea.
Ultra Thin Square Piezo Element
Small .63” square by .10” Thick piezo element
emits sound from side. These are found in many
cell phones. Requires driver (element only). Has
2 tabs for connection.
G15604 $0.99 SALE! $0.50 ea.
Stereo Earbuds with 2.5mm Mono Plug
These are not like your usual 3.5mm stereo
earbuds. They are wired for mono and
terminated in a 2.5mm mono jack. If you
wish to use them for stereo you would
need to cut off the mono plug and separate
the wires out. Brand new in bag. Great for applications where
you wish the same (mono) sound in both ears.
G16252 $1.99 SALE! $0.99 ea.
5W 8Ω 2 1/4” x 5” Full Range Speaker
Nice quality speaker features
paper cone and solid construction.
Impedance is 8 ohms and this
speaker can handle 5WRMS.
Overall size is 2 1/4” x 5” x 1 3/4”
Deep. Features a 1 1/2” Dia. x 7/8” deep magnet. Has metal
frame with 4 mounting holes and solder eyelets on back of
speaker for wire connection. Overall weight is 0.35 lbs. Brand
new from Zylux.
G16458 $1.79 SALE! $1.49 ea.
Gold Plated RCA Audio Video Cable
Nice quality flexible 5 ft. cable consists
of three separate shielded cables joined
together with color coded (red/yellow/white)
gold plated RCA jacks on each end. Great for
connecting camcorder, VCR, DVD, camera,
etc. to a TV. This is the standard set up for stereo audio and
video. Brand new in sealed manufacture bags.
G16328 $1.99 SALE! $1.49 ea.
All prices in this flyer
Expire 01/05/2010
115VAC 1Amp
Adjustable Timer Module
Nifty timer module is fully adjustable with on
times from 75 seconds up to 4 hours. This
heavy duty module is 1” square x 0.08”H and is the same
type found in many industrial machines, washers, dryers,
etc. To use it, you must connect up a momentary pushbutton
switch, a 1.5meg pot and a line cord (all of these parts are
NOT included). You then just connect up whatever 115VAC
load up to 1Amp (115Watts) to it. To start the timing process,
you press the momentary pushbutton, the load is energized
for whatever time you have set with the potentiometer. At the
end of the time the module turns off the load. New, made by
Syracuse Electronics part# SBPA 8B2373. Has 6 spade lugs
for connection and simple hookup diagram is printed on the
part. Module only - no other external parts.
G16271 $3.95 SALE! $2.49 ea.
SG3524 Regulating Pulse Width
Modulator (TI)
This 16 pin dip has the complete PWM
power control circuitry. The SG3524N IC
features uncommitted outputs for single ended or push/pull
applications, low standby current of 8mA and operation up
to 300kHz. Made by Texas Instruments. Data sheet available
online.
G15789 $1.25 SALE! $0.79 ea.
TL074CN Quad JFET Op Amp
(Factory Tube of 25pcs)
The JFET-input operational amplifiers in the
TL074CN series are designed as low-noise
versions of the TL08x series amplifiers with low input bias and
offset currents and fast slew rate. The low harmonic distortion
and low noise make the TL074CN ideally suited for highfidelity
and audio preamplifier applications. Each amplifier
features JFET inputs (for high input impedance) coupled with
bipolar output stages integrated on a single monolithic chip.
The devices are characterized for operation from 0°C to 70°C.
Full factory tube containing 25 pieces of the popular low noise
quad input JFET operational amplifier IC. These 14 pin DIP
ICs are made by Texas Instruments. These sell for about $15
per tube from many distributors. Check out our low price!
G16266 $7.50 SALE! $5.95/Tube of 25
“E” Ferrite Core
“E” Ferrite Core - Ferrite core for use in filters,
oscillators, noise control, power inverters,
switching converters, etc. Approximate size: 1
5/8” x 3/4” x 3/4”. Made of thick gray ferrite material color.
G8912 $1.00 SALE! $0.69 ea.
Pulse Engineering PE-51718 20mH
Current Sense Inductor
Brand new 3 lead inductor rated 20mH. 100CT
turns. Frequency range is 20kHz to 200kHz. Size
(excluding leads) is 20mm(T) x 11mm(W) x 10mm(D).
G16976 $3.95 SALE! $2.95 ea.
7/8” X 8 3/8” First Surface Mirror
High quality
glass first
surface mirror
is new but because of storage it has a 1/8” stain/film around
the outside edge perimeter (in most applications this has no
effect). Great for laser application or other optical applications.
Size 8 3/8”L x 7/8”W x 3/16” Thick. Sold “AS IS” because of
the stain/film edge.
G16675 $0.99 SALE! $0.69 ea.
BNC 45 Degree Connector
BNC 45° Connector for DS-3/4
Interconnect Type 735 Coaxial Cable.
This crimp on BNC connector is type
2026-30-7 and is approved for SBC
use. Made by Kings Electronics,
these are in factory sealed bags with
instructions printed on the bag.
G13895 $1.00 SALE! $0.50 ea.
Place your order online 24/7 at: www.goldmine–elec.com or call toll free: 1-800-445-0697
4W Audio Power Amplifier TDA1013B
Integrated audio amplifier circuit with DC
volume control in a 9 pin single in-line plastic
package. Operates from 10 to 40 volts DC
and can be used in all types of power amplifier
applications. Requires only a few external
components. The DC volume control has a range of more
than 80db and is controlled by a DC voltage of between 2 and
6.5V. Brand new with complete data sheet package.
G4271 $2.49 SALE! $1.99 ea.
TDA7396 45Watt/2Ω Bridge
Car Radio Amplifier
Super high power TDA7396 amplifier IC only
requires 5 capacitors and 2 resistors, yet can
deliver 45Watts into a 2Ω speaker load (65Watts
max). Operates from 8Volts up to 18V. Total quiescent current
is 100mA. See internet for full specs and simple PC board
layout. Brand new made by ST microelectronics.
G15415 $2.29 SALE! $1.49 ea.
Toshiba TA8251AH
4ch x 18W Audio Amp
The Toshiba TA8251AH is a 4 channel
BTL audio amplifier IC that features built
in standby function, muting function, junction temperature
detection circuit and an Aux. amplifier that can provide a
beep signal, etc., output to 2 channels. High power 18Watts
to each channel at RL = 4OHM, VCC = 13.7V, Low distortion
THD = .02% (Typ.), and easy to use 25 pin package (HZIP25-
P-1.27C). This operates from 9VDC up to 18VDC. These are
brand new. Requires very few additional components and
comes with hookup info. We are offering these at a very low
initial price for a limited time only! These usually sell from $8.95
up to $14.00 each!
G15382 $1.25 SALE! $0.99 ea.
TDA1518BQ 2x12Watt
Stereo Power Amplifier
The TDA1518BQ is a class-B output
stereo power amplifier in a 13 lead
SIL(single-in-line) plastic power package.
It requires very few external components, can be used as
stereo or a 24Watt mono BTL. Features operation from 6 to
18V, quiescent current of 30mA, output rated for 4Ω load.
New. See complete specs online.
G16633 $1.29 SALE! $1.00 ea.
Audio Opto Coupler
Tiny audio optocoupler is about the size of
a pencil eraser and has 4 leads. These are used extensively
in audio compressors, audio level controls, audio limiters,
expanders/noise gates, guitar tremolo effects, guitar amplifiers
and music effect boxes. Inside the black epoxy case is a 2
lead photocell (not a photodiode or photo-transistor) and
a 2 lead LED. This is why the device finds extensive use in
audio applications (photocell instead of photodiode). The LED
requires about 10-16mA current and the resistance of the
photocell varies from 150K up to megohms when the LED is
off to under 400Ω when the LED is on. New. NOTE: Dot on
case marks the cathode (–) lead of the LED. Blowout price!
G15396 $0.99 SALE! $0.69 ea.
Panasonic EVQ-WTEF2515B
Mechanical Rotary Encoder
The EVQ-WTEF2515B rotary encoder by
Panasonic features a shaft rotation angle: 360°
(endless), output resolution of 15 pulse/360°,
detent points 30 (each detent angle 12° ± 3°),
rating DC 10V @ 1mA (each bit), contact resistance between
terminals 1Ω max, and insulation resistance 50MegΩ minimum
at 250VDC between all terminals and shaft. This also has a
push ON momentary switch. Size about 0.50” sq. Mounts in
a 0.30” hole in a panel. Complete with panel nut. Has 5 leads
(2 for switch). Shaft size is 0.70”L x 0.25”Dia. “D” shaft. New.
These are worth over $6 each!
G16267 $1.49 SALE! $0.99 ea.
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