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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.

Electronic Theory

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

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  1. Electronic Projects 104
    1. Alarms 1
    2. Audio 1
    3. Automotive 3
    4. Computers 0
    5. High Voltage 0
    6. Light/Laser 1
    7. Microcontrollers 17
    8. Power Supply 36
    9. Remote Control 4
    10. Robotic 3
    11. Test Equipment 8
    12. Timers 1
    13. Other 27
  2. Electronic Theory 2
    1. Laws 0
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    3. Other 2
  3. Software & Downloads 0
    1. Hello World! Examples 0
  4. Code Repository 0

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  • How to operate an A7672S 4G modem with a computer

    Resource 'How to operate an A7672S 4G modem with a computer'

    by Nikhil Angnihotri, EngineersGarage.com As 5G is in full swing in the telecom segment, 4G modems are fast occupying the embedded space. The 4G GSM modems are useful in embedded systems for several reasons. 1. They provide a high-speed wireless connection to the internet. This allows embedded systems to access and process data in real time, which is essential for telematics, industrial automation, and remote monitoring applications. 2. The 4G GSM modems are relatively compact and...
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555 Timer as a Hysteretic Controller 2013-01-17
The 555 timer IC is often used to provide flexible astable oscillators and monostable timers. The I
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A Novel Harmonic Oscillator: The GIC Resonator 2013-01-17
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Introduction to Electron Tubes 2013-01-15
Vacuum tube, electron tube, or thermionic valve is a type of an electronic component mainly used on
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Diode Log and AntiLog Circuit Derivations 2012-10-15
Here is some basic theory on diode log and antilog circuits and their derivations. Lots of people s
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Indirect Measurement of the Current Draw of a Device 2012-10-15
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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Resource icon Jon Wilder
PIC 16F and Register Banking Explained 2012-03-25
PIC 16F And iRAM Banking By Jon Wilder As some of you have noticed, the internal RAM in the
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Ohm's Law for Beginners (or The Amp-Hour Fallacy) 2012-03-14
Just about once a day, somebody writes in with, “My boom box has a dead battery that says 12 volt
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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
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Resource icon Jon Wilder
A Beginner's Introduction to Microcontrollers 2012-01-31
Time after time I see beginners try to get started in embedded electronics, only to be overwhelmed
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Resource icon Menticol
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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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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Amplifier Theory Tutorial (work in progress) 2012-01-17
New Article (work in progress) AMPLIFIER THEORY TUTORIAL No matter how "digital" things get in
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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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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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How To: Test A Uni Junction Transistor 2011-07-03
You can easily test the health of a UJT (Uni junction transistor) by using a digital multimeter. Do
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Resource icon DirtyLude
Cheap ARM Starting Kit 2011-06-16
[QUOTE=TiagoSilva;838453]I always liked ARM processors too, but there is too much offer, and for so
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Resource icon MrDEB
DIY printed circuit boards My experiments and mistakes. 2011-06-15
New ArticleDIY Printed Circuit Boards for the home hobbyist methods and mistakes By Doug Bezaire
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computer parallel port help..plz read once 2010-09-30
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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Resource icon Mikebits
Eagle Schematic Tutorial 2010-08-08
I wrote up a Eagle tutorial for another user on this forum, but I thought, what the heck someone el
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