reduce power of AC motor

Discussion in 'The Projects Forum' started by amantaharmyer, Jul 23, 2014.

  1. amantaharmyer

    Thread Starter New Member

    Jul 23, 2014
    1
    0
    Hi all, thanks for reading this.
    I am working on a project using a 350W vacuum cleaner motor and would like to add something in line to reduce the power by 20% (so the motor runs at 280W).
    the inclusion of a diode has been suggested to me, but I think that would reduce the power by about 50%, which is too much of a reduction for what im after.

    might you have any suggestions to do this simply and cheaply?

    thanks,
    James.
     
  2. alfacliff

    Well-Known Member

    Dec 13, 2013
    2,449
    428
    if it is a brush type motor, just ues a light dimmer to reduce the power to the motor.
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,999
    745
    A light dimmer or ac motor speed controller.
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,565
    2,379
    You probably know the attainable Hg level will drop also!
    What is the reason for the required drop?
    You may do it by restricting the inlet, this will also reduce the power consumption. But also raise the rpm.
    Max.
     
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