Capacitance on ceiling fan...

Thread Starter

Externet

Joined Nov 29, 2005
2,223
Hi.
A plain 3-speed vulgar ceiling fan has a 3-in-1 inflated capacitor I want to replace : 4.5μF, 6μF and 6μF.
Why two of the capacitances are the same if the motor has 3 different speeds ?

1701906803034.png
 

MaxHeadRoom

Joined Jul 18, 2013
28,692
Most likely the because two are capable of maintaining the two speeds sufficiently whereas at the frequency the 4.5 is used, maintains the similar phase shift.
Highly likely the capacitor is Chinese origin, BTW ! :p
 

Thread Starter

Externet

Joined Nov 29, 2005
2,223
Thanks, boostbuck.
Then, the switch is not a common single-contact, energizes one, two or three paralleled capacitors in series with the 'run' winding. Got it.
The 3 capacitive reactances in series allows 3 levels of current; being the faster speed the three capacitors in parallel.
 
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