Frequent commutation circuit of capacitor-started single-phase motor

The number of turns, wire diameter, number of occupied slots and distribution of the main winding (running winding) LR and auxiliary winding (starting winding) LA of a motor used for frequent operation and direction changes are the same, so the steering change of this kind of motor only requires This can be achieved by using a switch SA and changing the order of powering on LR and LA. The circuit is shown in the figure.