Using stepper motors as generators

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dangerousprototypes.com writes:

Dino played around with some stepper motors by using them to generate electricity. The output is AC so he used a full-bridge rectifier, sometimes refereed to as the Graetz rectifier, to get a single direction signal, basically the absolute value of the sine wave. Check out the video to see it power LEDs, drive a motor, and charge some batteries.

Using stepper motors as generators – [Link]

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