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Fan motor: brushed or brushless

Discussion in 'Sensors and Actuators' started by Mark Green, Apr 24, 2017.

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  1. Mark Green

    Mark Green

    1
    0
    Apr 24, 2017
    14929933165251296210843.jpg Hey everyone. I wanted to use a router speed control to slow this fan motor down, but it doesn't look like I was expecting it to. Those don't look like my drill motors brushes, and it looks more like my bigger induction motors than I thought it would. But if so where's the capacitor? Thanks for your help.
     
  2. Bluejets

    Bluejets

    3,779
    783
    Oct 5, 2014
    Fan motors usually have the cap mounted remote from the motor i. e in the base or/ could be shaded pole motor. Either way it is frequency dependant which cannot be controlled the way you think.
     
  3. duke37

    duke37

    5,298
    739
    Jan 9, 2011
    The pole pieces look to be asymetrical to get rotation at start.
     
  4. Bluejets

    Bluejets

    3,779
    783
    Oct 5, 2014
    Yes, I think perhaps the shaded pole shorting rings might be located on the inner face of the extended section of the poles.
     
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