Single-phase AC motor circuit, the capacitor is used to play when starting the engine power through a loop of “phase change” and that is through the main winding and start winding current has a “stage” and rotating magnetic field produced, so you can make the rotor of the motor under the action of the rotating magnetic field rotation “for work”, the output power, the size of the capacitor, ignition coil of the magnitude of impact of more current capacity, the start winding current is higher, the engine speed increases, but when the decision because of good design factors, the current gain is not “unlimited” for the capacitor can only be within the specified range of values does not change free

Function
• The driver of a capacitor flat and wide, and placed very close to each other. They are in a position parallel with the dielectric located between them. When an electric current is applied to the capacitor, which flows between the conductors and through the dielectric. The flow of electrical current through the wires to the dielectric creates an electric field in the dielectric. This electric field can store electrical charge for later use.

Energy
• The engines require the use of a capacitor for two reasons. First, a capacitor can be used to provide additional power needed to start the engine. The energy stored in the dielectric can be removed from the electric field for use at this time, for extra energy. This allows the engine to be started with less power from your main source and auxiliary engine running smoothly.

Other uses
• In addition to help start the engine operation, the energy stored in the capacitor can also help with the continuing operation of the motor. A capacitor can also be used to prevent a momentary loss of power to alter the engine’s ability to function smoothly. In the event that the engine has a brief power outage in motor functions will be threatened without a capacitor. With the use of a capacitor, the motor can supplement the flow of energy to energy stored in the dielectric field of energy.