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A strange water pump# EE - 电子工程
d*b
1
I am trying to replace a water pump, which seems to have a strange circuit.
There are 4 pins for this pump.
2 pins are power lines, 110VAC and ground.
2 pins seem to connect to the two ends of a capacitor, why? what is this for?
Thanks.
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p*e
2
single phase induction motor. cap to generate 90 deg phase shift

for?

【在 d*b 的大作中提到】
: I am trying to replace a water pump, which seems to have a strange circuit.
: There are 4 pins for this pump.
: 2 pins are power lines, 110VAC and ground.
: 2 pins seem to connect to the two ends of a capacitor, why? what is this for?
: Thanks.

avatar
p*e
3
read service manual ah..

【在 p*********e 的大作中提到】
: single phase induction motor. cap to generate 90 deg phase shift
:
: for?

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f*0
4
that capacitor is to start the motor.
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d*b
5
why not use the power line to turn on the pump directly?

【在 f*****0 的大作中提到】
: that capacitor is to start the motor.
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