# Electronic Theory

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

1. 216
2. 54
1. Guides 19
2. Laws 1
3. Other 9
3. 24
4. 1

### Top Articles

1. Determine Voltage Drop Across Resistors AtomSoft
How to calculate voltage drop across series resistors.
2. Pull Up and Pull Down Resistor Tutorial ericgibbs
The Basic use of a pull-up or pull-down resistor is to prevent a 'floating' input to a digital circ
3. Ohm's Law for Beginners (or The Amp-Hour Fallacy) bychon
Just about once a day, somebody writes in with, “My boom box has a dead battery that says 12 volt
4. The Basics of Bypass Capacitors ElectroMaster
This article will explain the function of a bypass capacitor, when its appropriate to use them, and
5. Thermal Budget: Transistors & Heatsinks spec
How to select power devices and specify heatsinking
6. Practical Elecromagnet Design spec
Design and build practical electromagnets using simplified theory and formulae
7. Two Simple Formulae: capacitance and inductance spec
Two relationships can simplify capacitor and inductor voltage and current calculations
1. Articles are being shown from all child categories.
2. ### The 555 Timer

The 555 timer is capable of producing accurate timing ranges from micro
Updated:
Apr 7, 2012
3. ### PIC 16F and Register Banking Explained

PIC 16F And iRAM Banking By Jon Wilder As some of you have noticed, the internal RAM in the
5/5, 1 vote
Updated:
Mar 25, 2012
4. ### Ohm's Law for Beginners (or The Amp-Hour Fallacy)

Just about once a day, somebody writes in with, “My boom box has a dead battery that says 12 volt
5/5, 1 vote
Updated:
Mar 14, 2012
5. ### The Basics of Bypass Capacitors

This article will explain the function of a bypass capacitor, when its appropriate to use them, and
5/5, 1 vote
Updated:
Jan 31, 2012
6. ### A Beginner's Introduction to Microcontrollers

Time after time I see beginners try to get started in embedded electronics, only to be overwhelmed
Updated:
Jan 30, 2012
7. ### Capacitor ESR Meter

[B]What is ESR and How Can It be Tested?[/B] As the allmighty Samuel M. Goldwasser says, "ESR (
Updated:
Jan 26, 2012
8. ### Introduction to Pulse Width Modulation

A look at a powerful technique for controlling analog circuits with a microprocessor's digital outp
Updated:
Jan 26, 2012
9. ### Amplifier Theory Tutorial (work in progress)

New Article (work in progress) AMPLIFIER THEORY TUTORIAL No matter how "digital" things get in
5/5, 1 vote
Updated:
Jan 17, 2012
10. ### Common Resistor and Capacitor Values

To manufacture resistors (or other components like capacitors) of every possible value would be imp
Updated:
Dec 29, 2011

Over the years many threads have revolved around the poor operation of a circuit built on a breadbo
Updated:
Dec 22, 2011
12. ### The 4017 Decade Counter

[ATTACH=RIGHT]54828[/ATTACH]This handy Decade Counter (or sometimes called a Johnson Counter) can b
Updated:
Jul 31, 2011
13. ### How To: Test A Uni Junction Transistor

You can easily test the health of a UJT (Uni junction transistor) by using a digital multimeter. Do
Updated:
Jul 2, 2011
14. ### Cheap ARM Starting Kit

[QUOTE=TiagoSilva;838453]I always liked ARM processors too, but there is too much offer, and for so
Updated:
Jun 16, 2011
15. ### DIY printed circuit boards My experiments and mistakes.

New ArticleDIY Printed Circuit Boards for the home hobbyist methods and mistakes By Doug Bezaire
Updated:
Jun 14, 2011
16. ### Eagle Schematic Tutorial

I wrote up a Eagle tutorial for another user on this forum, but I thought, what the heck someone el
5/5, 1 vote
Updated:
Aug 8, 2010
17. ### Basic Soldering & Desoldering Guide

The most fundamental skill in order to construct any electronic project is soldering (and desolderi
Updated:
Jul 11, 2010
18. ### UNIT Committment solution using Dynamic programming

INTRODUCTION The unit commitment is an optimization problem that economically schedules generati
Updated:
Jan 4, 2010
19. ### Method to Make Project Panels (Warning: Detailed Info!)

When laser printers first came into coomon use (in the workplace anyway), here's a technique I came
Updated:
Jan 4, 2010
20. ### LED Switching Regulator

I was bored at work and had an idea so I started playing around in LTSpice and came up with this ci