Patent ID: 8274253

Claim:
A control circuit for a single-phase AC motor of a dryer, comprising a starting control unit; a first drive circuit; a bidirectional triode thyristor BCR 1 ; a second drive circuit; and a bidirectional triode thyristor BCR 2 ; wherein said bidirectional triode thyristor BCR 1 is serially connected to a motor starting winding, and a starting capacitor, and then to a utility power AC input; said starting control unit is connected to a control end of said bidirectional triode thyristor BCR 1 via said first drive circuit; said bidirectional triode thyristor BCR 2 is serially connected to an electrically heated strip, and then to said utility power AC input; said starting control unit is connected to a control end of said bidirectional triode thyristor BCR 2 via said second drive circuit; and said first drive circuit is interlocked with said second drive circuit, so that as said bidirectional triode thyristor BCR 1 is on, said bidirectional triode thyristor BCR 2 is off, and as said bidirectional triode thyristor BCR 1 is off, said bidirectional triode thyristor BCR 2 is on.