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Fan motor: brushed or brushless

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

Apr 24, 2017 #1

Mark Green

1

0

Apr 24, 2017

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.
Apr 24, 2017 #2

Bluejets

3,629

732

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.
Apr 24, 2017 #3

duke37

5,267

727

Jan 9, 2011

The pole pieces look to be asymetrical to get rotation at start.
Apr 24, 2017 #4

Bluejets

3,629

732

Oct 5, 2014

duke37 said:

The pole pieces look to be asymetrical to get rotation at start.
Click to expand...

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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