DINGFENG

Q
DINGFENG CAPACITOR - Can you use a run capacitor in place of a start capacitor?
A
Q: DINGFENG CAPACITOR - Can you use a run capacitor in place of a start capacitor?

A: 
Yes, you can use run capacitors as start capacitors. The disadvantage of using run capacitors as start capacitors is that you would usually need to use more run capacitors than you have space for. For the start up of a motor to be able to develop torque, you need a very high capacitance value. To get a high enough capacitance value with run capacitors, you would generally need to have a whole array of run capacitors to compensate for the low capacitance values of each of the individual run capacitors. But if you have the mounting space available, this is a perfectly adequate solution.

However, you cannot use a starting capacitor in place of a run capacitor. When you engage a start capacitor in a current-carrying circuit, it will be good for a few seconds only. It cannot be charged up in the circuit continuously like run capacitors can.


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