What is Start Capacitor? | Animation | HVAC | Electrical

A start capacitor is an electrical component used in some types of electric motors to aid in the motor's startup process. It is a type of capacitor designed to provide an initial surge of electrical energy to the motor's auxiliary winding during startup. This surge of energy creates a rotating magnetic field that enables the motor to overcome inertia and begin rotating.
Start capacitors are characterized by their relatively high capacitance values and are typically used in single-phase motors, where an additional boost during startup is required. Once the motor reaches a certain speed, a mechanism like a centrifugal switch disconnects the start capacitor from the circuit to avoid continuous operation, as it is not needed beyond the initial startup phase.
The purpose of a start capacitor is to help single-phase motors start efficiently and reliably. It is an essential component in various applications, including air conditioners, refrigerators, compressors, and other small appliances that utilize single-phase electric motors.
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