Use of a single-phase capacitor motor: motor has two windings, namely the starting winding and winding operation. Two windings on the space difference of 90 degrees. The starting winding connected in series with a large capacity capacitor, when running winding and the start winding single-phase AC, since the capacitor effect to the starting winding current in time than the running winding current lead angle of 90 degrees, to reach the maximum value. In time and space to form two identical pulse magnetic field, so that the air gap between the stator and the rotor generated in a rotating magnetic field, the rotary magnetic field, motor rotor induced current, current and electromagnetic torque of rotating magnetic field interact with each other, so that the rotation of the motor.

Note: you must use the governor, to achieve the speed