d*b
发帖数: 130 | 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. |
p*********e
发帖数: 16 | 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.
|
p*********e
发帖数: 16 | 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?
|
f*****0
发帖数: 489 | 4 that capacitor is to start the motor. |
d*b
发帖数: 130 | 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.
|
