Single-Phase Induction Motors
The single-phase engine operates beneath the same principle as the polyphase electric motor, except that the Single Phase Induction Motor rotating magnetic field effect generated by the stator does not exist until running rpm is reached. Since no beginning torque is offered, a design system is included to start the motor. They are the various designations:

Torque-Speed Curves of Different Single-Phase Induction Motors

Shaded-pole: Have only 1 main winding and no begin winding. This configuration causes a change of the applied magnetic field in romantic relationship to the rotor, creating stating torque. Applications include fans and small appliances.

Split-Phase (induction start motor)
Has two sets of stator windings. The “start” windings sit 90 degrees to the “run” windings and change the magnetic field of the stator, inducing beginning torque. Applications include small grinders, small enthusiasts, and blowers.

Capacitor-Start
The most typical single-phase motor used in industrial applications. It is a modified split-stage engine with a capacitor in series with the beginning winding to supply a start boost. Software include small conveyors, huge blowers, pumps, and direct-drives.

Permanent-Split-Capacitor (PSC)
Uses identical main and auxiliary windings with a capacitor to provide starting torque. They will be the most reliable single-phase motor because no centrifugal starting switch is necessary. Applications include supporters and pumps in HVAC and refrigeration industries.