Recent content by MotorMag

  1. M

    Stepper motor demagnetization

    Thanks. We've been doing these types of experiments without any luck so far. I suppose creating the right conditions is the key. We'll raise the temperature to something within reason (since this device is handheld) and try to apply current while the motor is out of step. Any other...
  2. M

    Stepper motor demagnetization

    That's what I mean, I'm not sure that's even possible without serious magnetic field in the environment. Can it be done within the motor realistically? and the motor is very small...
  3. M

    Stepper motor demagnetization

    Thanks for the information - from what I see here, this seems unlikely, since the device is in contact with the skin (handheld), and even through plastic, i doubt it would get this hot due to internal power sources. Is the high current problem actually the current causing a high temperature...
  4. M

    Stepper motor demagnetization

    How does heat affect the magnets? Just wondering. UPDATE: Oh, I see. I'm wondering what heat thresholds are bad in particular. We actually move the motor extremely slowly , so it's doubtful that heat would be a factor, but in any case, are there recommendations for temperature maximums for...
  5. M

    Stepper motor demagnetization

    Hope the community can help make some suggestions... We have a small device using a 8mm diameter micro stepper motor out in the field, and some have come back demagnetized. I'm under the impression that demagnetization can happen if a stepper is disassembled (this is not the case for us), or if...
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