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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.

  • 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.

Electronic Theory

Basic principles, ideas, concepts, laws, and formulas behind electronics.

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The 555 timer IC is often used to provide flexible astable oscillators and monostable timers. The I
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Vacuum tube, electron tube, or thermionic valve is a type of an electronic component mainly used on
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Here is some basic theory on diode log and antilog circuits and their derivations. Lots of people s
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Sometimes we want to know the current draw of a device for various reasons. One reason would be to
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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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PIC 16F And iRAM Banking By Jon Wilder As some of you have noticed, the internal RAM in the
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Just about once a day, somebody writes in with, “My boom box has a dead battery that says 12 volt
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This article will explain the function of a bypass capacitor, when its appropriate to use them, and
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Time after time I see beginners try to get started in embedded electronics, only to be overwhelmed
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Capacitor ESR Meter 2012-01-27
[B]What is ESR and How Can It be Tested?[/B] As the allmighty Samuel M. Goldwasser says, "ESR (
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A look at a powerful technique for controlling analog circuits with a microprocessor's digital outp
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New Article (work in progress) AMPLIFIER THEORY TUTORIAL No matter how "digital" things get in
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To manufacture resistors (or other components like capacitors) of every possible value would be imp
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[ATTACH=RIGHT]54828[/ATTACH]This handy Decade Counter (or sometimes called a Johnson Counter) can b
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You can easily test the health of a UJT (Uni junction transistor) by using a digital multimeter. Do
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[QUOTE=TiagoSilva;838453]I always liked ARM processors too, but there is too much offer, and for so
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New ArticleDIY Printed Circuit Boards for the home hobbyist methods and mistakes By Doug Bezaire
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hello friends, i am trying to make a 3 Axis 3 axis cnc router. i want to control the 3 stepper
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I wrote up a Eagle tutorial for another user on this forum, but I thought, what the heck someone el
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