Standby power cut-off device

A standby power cut-off device installed on a power line connecting external commercial alternating current power and the inside of an electrical device, the standby power cut-off device comprising:

• a manual switch for supplying the commercial alternating current power or cutting off the supply;
• a solid-state relay for supplying the commercial alternating current power to an output side thereof if current flows to an input side thereof according to the operation of the manual switch;
• a low power supply unit for converting a voltage of the commercial alternating current power supplied by the solid-state relay and supplying the converted voltage;
• a microprocessor for receiving power from the low power supply unit and controlling operations of the standby power cut-off device;
• a power storage unit charged with the power received from the low power supply unit and supplying the power to the microprocessor;
• and
• a control signal generator for transmitting a control signal to the microprocessor if the current flows according to the operation of the manual switch,
• wherein the microprocessor controls the operations of the standby power cut-off device by using a control method comprising:
• a first step of repeatedly determining whether the control signal of the control signal generator exists or not if the manual switch is operated to allow the control signal to be generated from the control signal generator;
• a step of determining whether a given period of time passes after the first step has been performed;
• and
• a second step of determining whether the control signal exists, and
• if the given period of time passes after the first step has been performed, the microprocessor performs the second step, and if it is determined that the control signal exists in the second step, the microprocessor returns to the first step, whereas if it is determined that the control signal does not exist, the microprocessor finally determines that the operation of the manual switch is stopped.

A standby power cut-off device installed on a power line connecting external commercial alternating current power and the inside of an electrical device, the standby power cut-off device comprising:

• a manual switch for supplying the commercial alternating current power or cutting off the supply;
• a solid-state relay for supplying the commercial alternating current power to an output side thereof if current flows to an input side thereof according to the operation of the manual switch;
• a low power supply unit for converting a voltage of the commercial alternating current power supplied by the solid-state relay and supplying the converted voltage;
• a microprocessor for receiving power from the low power supply unit and controlling operations of the standby power cut-off device;
• a power storage unit charged with the power received from the low power supply unit and supplying the power to the microprocessor;
• and
• a control signal generator for transmitting a control signal to the microprocessor if the current flows according to the operation of the manual switch,
• wherein the microprocessor controls the operations of the standby power cut-off device by using a control method comprising:
• a first step of repeatedly determining whether that the control signal of the control signal generator exists or not if the manual switch is operated to allow the control signal to be generated from the control signal generator;
• a step of determining whether a given period of time passes after the first step has been performed;
• and
• a second step of determining whether the control signal exists, and
• if the given period of time passes after the first step has been performed, the microprocessor performs the second step, and if it is determined that the control signal exists in the second step, the second step is performed whenever a predetermined period of time passes, whereas if the control signal does not exist, the microprocessor finally determines that the operation of the manual switch is stopped.

A standby power cut-off device installed on a power line connecting external commercial alternating current power and the inside of an electrical device, the standby power cut-off device comprising:

• a manual switch for supplying the commercial alternating current power or cutting off the supply;
• a solid-state relay for supplying the commercial alternating current power to an output side thereof if current flows to an input side thereof according to the operation of the manual switch;
• a low power supply unit for converting a voltage of the commercial alternating current power supplied by the solid-state relay and supplying the converted voltage;
• a microprocessor for receiving power from the low power supply unit and controlling operations of the standby power cut-off device;
• a power storage unit charged with the power received from the low power supply unit and supplying the power to the microprocessor;
• and
• a control signal generator for transmitting a control signal to the microprocessor if the current flows according to the operation of the manual switch,
• wherein the microprocessor controls the operations of the standby power cut-off device by using a control method comprising:
• a first step of repeatedly determining whether that the control signal of the control signal generator exists or not if the manual switch is operated to allow the control signal to be generated from the control signal generator;
• a step of determining whether a given period of time passes after the first step has been performed;
• and
• a second step of determining whether the control signal exists, and
• the microprocess repeatedly performs the second step during the given period of time after the first step has been performed, so that if the given period of time passes, without having the control signal, the microprocessor finally determines that the operation of the manual switch is stopped.