Novel single-phase motor control circuit

Circuit working principle: The transfer switches Kl and K2 in the picture are linked.
When starting the motor, K. , K2 is set to A' gear. During the positive half cycle of the power supply (.positive 6 negative), the circuit that triggers
the current is:. -÷Main winding_ ÷Kl_+ VDz_ VD4-+ R4_ K2-*VD6-÷VS
control electrode - cathode -6, vs is triggered, and the load current flows through the positive half cycle; in the negative half cycle,
the path of the trigger current is: 6-VS cathode-control electrode-+VD3-R4-K2-VDs-+
VD. A main winding -*a, vs is also triggered , and a negative half-cycle load current flows. Due to
the phase-shifting effect of capacitor C:, the secondary winding of the motor also flows through an AC current with a leading phase,
so the motor is started and runs normally.