Knowledgeable repliers to an earlier post of mine helped me understand the role of a ptc thermistor in the compressor start windings of a refridgerator.
But the more i learn, the more i know i dont know.
Question: in a clothes dryer, the start windings are de-energized once the motor is up to speed and the centrifugal switch opens up and it's just run windings from there on.
However, on a fridge compressor, the start windins are de-energized once the ptc heats up and resistance ultimately rises to stop the current through the start windings, and similar to the dryer, the compreesor operates soley on the run windins. But won't the thermistor cool back down in a while and thus offer the low/no resistance path again through the start windings when the compressor doesnt need it because it's already running??
What happens then, or what keeps this from happening?
Again, many advance thanks to you.
But the more i learn, the more i know i dont know.
Question: in a clothes dryer, the start windings are de-energized once the motor is up to speed and the centrifugal switch opens up and it's just run windings from there on.
However, on a fridge compressor, the start windins are de-energized once the ptc heats up and resistance ultimately rises to stop the current through the start windings, and similar to the dryer, the compreesor operates soley on the run windins. But won't the thermistor cool back down in a while and thus offer the low/no resistance path again through the start windings when the compressor doesnt need it because it's already running??
What happens then, or what keeps this from happening?
Again, many advance thanks to you.