Single-Phase Induction Motors
The single-phase motor operates under the same principle as the polyphase electric motor, except that the rotating magnetic field effect chain sprocket generated by the stator does not exist until running rpm is reached. Since no starting torque is obtainable, 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 one main winding and no begin winding. This configuration causes a shift of the applied magnetic field in romantic relationship to the rotor, creating stating torque. Applications include followers and small appliances.

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

Capacitor-Start
The most typical single-phase motor used in industrial applications. It really is a altered split-stage motor with a capacitor in series with the start 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 supply starting torque. They are the most reliable single-phase electric motor because no centrifugal beginning switch is necessary. Applications include supporters and pumps in HVAC and refrigeration industries.