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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Resources by ElectroMaster

Resource icon ElectroMaster
Toy Organ 2012-09-17
This circuit produces a tone according to the button being pressed.
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Fan Control Circuit (LM317) 2013-05-19
This is an illustrated tutorial on building a variable voltage control for fans and other units, ba
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The 555 Timer 2012-04-07
The 555 timer is capable of producing accurate timing ranges from micro
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The Basics of Bypass Capacitors 2012-02-01
This article will explain the function of a bypass capacitor, when its appropriate to use them, and
5.00 star(s) 1 ratings
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Introduction to Pulse Width Modulation 2012-01-26
A look at a powerful technique for controlling analog circuits with a microprocessor's digital outp
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Common Resistor and Capacitor Values 2011-12-30
To manufacture resistors (or other components like capacitors) of every possible value would be imp
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TV Remove Blocker 2011-12-18
Just point this small device at the TV and the remote gets jammed.
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Simple Lie Detector 2011-09-10
Here's a simple lie detector that can be built in a few minutes, it is mean for fun and is obviousl
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The 4017 Decade Counter 2011-08-01
[ATTACH=RIGHT]54828[/ATTACH]This handy Decade Counter (or sometimes called a Johnson Counter) can b
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Jeopardy Quiz Game 2011-06-22
This electronic "Jeopardy" game circuit consists of four push-button switches. When one is pressed,
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Computer Voltage Monitor 2011-06-16
This is an illustrated tutorial on building a voltage monitor for fan control circuits - rheostats,
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Electronic Combination Lock 2011-03-10
This circuit is very basic to build. To open a the lock which is connected to the K1 Load you must
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Voice Scrambler 2011-01-13
With this circuit you can modify how your voice sounds by changing the pitch of your voice. This ci
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FM Transmitter (#1)
This circuit is a simple two transistor (2N2222) FM transmitter. No license is required for this tr
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Strobe Light 2010-07-06
Strobe lights are widely used by disco lovers to create wonderful visual effects in disco halls and
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