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Need help with speed control of 12vdc PM motor

Discussion in 'Sensors and Actuators' started by engineeredgarden, Oct 26, 2010.

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  1. engineeredgarden

    engineeredgarden

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    0
    Sep 30, 2010
    I am working on a project that requires very low torque and slow speed of a shaft, and would like to use a 12vdc PM motor to do it with. A cordless drill motor seems just the thing for it, but even when using the onboard speed control of the drill itself (I think a transistor and something inside the trigger mechanism) it's still way too fast. I've tried different resistors in series with the voltage supply with no luck, and wondered if there was a simple homemade solution to this problem. Any thoughts?
     
  2. rob_croxford

    rob_croxford

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    Aug 3, 2010
    look up PWM motor control. there are countless threads on this site that address the problem
     
  3. engineeredgarden

    engineeredgarden

    8
    0
    Sep 30, 2010
    Oh, ok....i'll do that. Thanks!
     
  4. rob_croxford

    rob_croxford

    262
    0
    Aug 3, 2010
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