Patent ID: 8390239
Filing Date: 2013-03-05
Classification: H02P

Abstract:
1. A control circuit for a single-phase AC motor of a dryer, comprising: an electronic starting circuit comprising a starting control unit, a first drive circuit, and a bidirectional triode thyristor; a second drive circuit; and a mechanical switch K; wherein said bidirectional triode thyristor is serially connected to a starting winding and a starting capacitor of said motor, and connected to an AC input; said starting control unit is connected to a control end of said bidirectional triode thyristor via said first drive circuit; said mechanical switch K is serially connected to an electrical heating wire, and connected to said AC input; said starting control unit is connected to a control end of said mechanical switch K via said second drive circuit; and said first drive circuit and said second drive circuit are interlocked with each other whereby enabling said mechanical switch K to be switched off as said bidirectional triode thyristor is conducting, and said mechanical switch K to be switched on as said bidirectional triode thyristor is cut off.