# Electronic Theory

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

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2. 54
1. Guides 19
2. Laws 1
3. Other 9
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### 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.

[b]Introduction[/b] When building a permanent circuit the components can be grown together (as in
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Jan 3, 2010
3. ### The Oscilloscope

The oscilloscope is basically a graph-displaying device - it draws a graph of an electrical signal.
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Jan 3, 2010

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Jan 3, 2010
5. ### Resistor colour code and values chart

Here's a resistor colour code chart I made awhile ago. It isn't the most comprehensive chart, it
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Jan 3, 2010
6. ### Motor Sizing For Moving Robots

================================== PLEASE REFER TO THE INCLUDED DIAGRAM =========================
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Jan 3, 2010

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Jan 3, 2010
8. ### Magnets and Electromagnets

Magnets and electromagnets have many uses, every electric motor, generator or transformer requires
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Jan 3, 2010
9. ### Voltage

The electric pressure that must be applied to cause electron movement is called voltage. When such
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Jan 3, 2010
10. ### Current and Conductivity

A current flow path is provided by wires or other metals and thus form conductors of electricity. T
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Jan 3, 2010
11. ### Cheap and good PCB etching solution.....

The etching solution is made by adding 1 part Muriatic Acid (the common kind that's sold in hardwar