Using stepper motors as generators

in documentation by DP | 2 comments

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.

Via the forum.

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Comments

  1. kuhltwo says:

    I can’t believe it!!! Someone else has an “o-scope” as old as mine!!
    An oldie but a goodie, I’ve been using mine for over 20 yrs.

  2. mpa says:

    I also have the same scope. even though I also have a Tektronics 475, I always reach for this one. The case has no holes for cooling (not needed). Also, has a battery pack that attaches at the back. I took it off because the batteries were dead and it is too heavy. I beleive it has 24 Ni-Cd D-Cells. Any time I turn it on, the traces line up at where it was set last. This one has a long persistence phosphor so it has a slow decaying trace. Love this scope.

    I took two steppers and connected them to each other in parallel. You turn one and the other one turns. Of course it won’t work with slow turning, not enough pulse power generated.

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