what does a capacitor do on an ac motor?-凯发官方

a motor capacitor is applied to:
1. set motor ratate direction
2. provide starting torque to start motor

a motor capacitor (or start capacitor) is used to change the current to one or more windings of a single-phase ac induction motor to create a rotating magnetic field. a single-phase ac motor may be difficult to start or unable to start without the capacitor. in addition, capacitor specs must be selected to match the motor specs. if a capacitor with an excessive capacity is used, although the starting torque can be generated, the motor will also generate heat and abnormal vibration. if a capacitor with too small capacity is used, insufficient starting torque may not be able to start the motor. a capacitor is included when ordering a new motor.