Patent ID: 8181052

Claim:
A power supply control circuit, comprising: a standby control circuit comprising a switch member, a flip-flop, an electronic switch coupled to the flip-flop and is off normally, and an inverter coupled to the electronic switch, the standby control circuit being configured to generate a pulse signal upon actuation of the switch member and output a first control signal, a microprocessor coupled to the standby control circuit and configured to receive the pulse signal, to output a second control signal, and to set the second control signal to a first state upon a first generation of the pulse signal and to a second state upon a second generation of the pulse signal, the standby control circuit being further configured to receive the second control signal, to maintain the first control signal at the active state when the second control signal is set to the first state, and to set the first control signal to an inactive state when the second control signal is set to the second state, and wherein the flip-flop configured to activate the electronic switch upon actuation of the switch member, to maintain the electronic switch in the activated state when the second control signal is set to the first state, and to deactivate the electronic switch when the second control signal is set to the second state, the inverter configured to set the first control signal to the active state when the electronic switch is activated and to the inactive state when the electronic switch is deactivated; and a power supply main circuit coupled to the microprocessor and the standby control circuit and configured to receive the first control signal, to output a power to the microprocessor when the first control signal is set to the active state, and to cut off the power to the microprocessor when the first control signal is set to the inactive state.