In the appliance device, often equipped with small, Single Phase Induction Motor. AC Induction Motor application categories due to differences in general can be divided into sub-phase motor, capacitor start motors, permanent sub-phase capacitor motors, Shaded Pole Motor, permanent magnet DC motors and AC and DC motors and other types.

The general Three Phase Induction Motor connected three-phase alternating current, the motor stator windings by alternating-current resulting from rotating magnetic field and sensing the rotor, so that the rotor produces electromotive force, and the formation of interaction torque, so that the rotor rotation. But the Single Phase AC Induction Motor, only produce changes in polarity and intensity of alternating magnetic field, can not produce rotating magnetic field, it must be another Single Phase AC Induction Motor design allows it to produce rotating magnetic field, the rotor can rotate, so common watched single-phase AC motors Start-type phase, shaded pole type, capacitor start type, and so kind.