How to build an electric generator?

2 answers

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ANSWER #1 of 2

Ok, just wrap a bunch of coils of wire loosely around a stationary magnet , and move the magnet back and forth. With enough coils, you can light up an LED. Attach a honkin' capacitor to it, and you have a home-made 'shake' flashlight.

ANSWER #2 of 2

if you just want a little one for like 2 or 3 plugs to charge your phone and lil things you can buy one of those battery back up things at staples

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