Single-Phase Induction Motors
The single-phase engine operates beneath the same principle as the polyphase engine, except that the rotating magnetic field effect produced by the stator does not exist until running rpm is reached. Since no starting torque is obtainable, a design system is included to begin the motor. These are the various designations:

Torque-Speed Curves of Different Single-Phase Induction Motors

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

Split-Phase (induction start engine)
Has two units of stator windings. The “start” Single Phase Induction Motor china windings are positioned 90 degrees to the “run” windings and shift the magnetic field of the stator, inducing starting torque. Applications include small grinders, small followers, and blowers.

Capacitor-Start
The most common single-phase motor found in industrial applications. It is a modified split-stage engine with a capacitor in series with the start winding to provide a start boost. Program include small conveyors, large blowers, pumps, and direct-drives.

Permanent-Split-Capacitor (PSC)
Uses identical primary and auxiliary windings with a capacitor to supply starting torque. They are the most reliable single-phase motor because no centrifugal beginning switch is required. Applications include followers and pumps in HVAC and refrigeration industries.