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How to control the speed of 1.5 Volt motor?

  1. Feb 14, 2015 #1
    How to control the speed of 1.5 Volt motor?
     
  2. jcsd
  3. Feb 14, 2015 #2
  4. Feb 14, 2015 #3

    CWatters

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    Most 1.5V motors are probably DC brushed permanent magnet motors. To control the speed you can either reduce the voltage (eg to 1V) or use Pulse Width Modulation (switch the 1.5V on and off rapidly so that the average voltage is less).
     
  5. Feb 14, 2015 #4
    Rheostat (potentiometer)?
     
  6. Feb 14, 2015 #5

    davenn

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    doesn't really work too well as it severely limits the current to the motor as well and it looses its torque power

    That's why PWM is the best way to control the speed
     
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