Electronics, explained.

Practical articles, useful calculators, and the occasional bad joke.

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Featured post

A good place to start if you want something thoughtful, useful, and immediately relevant to electronics practice.

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Featured calculators

A small selection of tools that help with the numbers you reach for most often when learning or building.

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Ohm's Law circuit diagram showing voltage, current, and resistance relationship.

Ohm's Law Calculator | Voltage, Current, Resistance & Power

This Ohm's Law Calculator shows the relationship between voltage (V), current (I), and resistance (R), and also calculates the electrical power dissipated in the resistor.

Plot of low-pass filter

Low-Pass Filter Calculator | RC, LC & LR Bode Plot

This calculator plots the frequency response of low-pass filters from the entered component values. Several topologies are available, including optional component parasitics, and you can compare multiple traces.

Diagram showing resistors connected in parallel

Equivalent Resistance Calculator: Series, Parallel & Mixed

With the equivalent resistor calculator you can calculate the equivalent resistance of the most common resistor networks.

Unwind

Latest comic

Technical learning works better when it also funny. Here is the latest comic from the site.

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Comic about resistor color code

Fresh from the comic section

Yellow is a number

For the lolz. Also, I need to learn how to draw. It's a work in progress.

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