One of the best ways to describe a transistor is as an “electronic switch.”  They are solid state devices that make up almost everything in our world.  This video by Veritasium, which is a bit older, covers how n and p-type transistors actually work.

This complements the Addohms videos on BJTs and MOSFETs, which are more about how to use them.

If you’ve never watched a Veritasium video, do yourself a favor and set aside a few minutes. He’s like the Alton Brown of science.


Fan of making things beep, blink and fly. Created AddOhms. Stream on Twitch. Video Host on element14 Presents and writing for Hackster.IO. Call sign KN6FGY.

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