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Undervolt a stepper motor

Discussion in 'Electronic Basics' started by [email protected], Apr 27, 2007.

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  1. Guest

    Is there any reason not too? I've got a load of 24v steppers I've
    ripped out of dead printers. I'd like to use them in a battery
    powered situation, but I really don't want to have a 20AA battery
    pack. If I run the 24v stepper coils @ 12V, is it going to damage
    anything? I realize that they will likely pull double the current
    they were rated for @ 24v, but is that going to cause smoking motors
    in the short term?

    Thanks!
     
  2. Guest

    That should read half the current, duh. But other then the obvious
    lack of torque, is this going to cause problems? Thanks!
     
  3. Chris

    Chris Guest

    Hi, Richard. No problem at all. Half the current, 1/4 the power, but
    no ill effects to the motor. Go right ahead.

    But if you need +24V for a portable application where you're driving
    steppers, you're going to need a lot of current, and are going to be
    burning through those AA batteries like kindling. How about two small
    lead-acid rechargeables in series?

    Cheers
    Chris
     
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