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reversing an AC motor

C

Cyrus

Jan 1, 1970
0
I've been trying to reverse the direction of an AC fan motor without
taking it apart and changing things.

It doesn't have any brushes, it is just a solid core inside an
electromagnet.
Looking at the surface of the core, it has steel bars in a step
pattern.

I want to control is with a uC in both directions. I'm thinking it
might be possible to reverse it if I change the 60Hz frequency to
perhaps 120Hz- but if anyone knows, they could save me lots of trouble
: )



Cyrus
 
C

Cyrus

Jan 1, 1970
0
C

Charles Schuler

Jan 1, 1970
0
Sounds like a shaded-pole motor. Not easy to reverse!
 
W

Watson A.Name \Watt Sun - the Dark Remover\

Jan 1, 1970
0
Cyrus said:
I've been trying to reverse the direction of an AC fan motor without
taking it apart and changing things.
It doesn't have any brushes, it is just a solid core inside an
electromagnet.
Looking at the surface of the core, it has steel bars in a step
pattern.
I want to control is with a uC in both directions. I'm thinking it
might be possible to reverse it if I change the 60Hz frequency to
perhaps 120Hz- but if anyone knows, they could save me lots of trouble
: )

It's a one way motor by design. You have to use gears or pulleys to do
the reversal.
 
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