Patent ID: 6657408
Filing Date: 2003-12-02
Classification: B60H,H02P,Y10S

Abstract:
An air conditioner, comprising:a power application device connected in series to a direct-current (DC) power source; a switch device connected in parallel with said power application device; a capacitor charged by said DC power source via said power application device; a voltage detector for detecting a voltage of said capacitor; an output unit for driving a motor-driven compressor for air conditioning, said output unit receiving a power from said DC power source via said switch device; a control unit for controlling said output unit; a power supply connected in parallel with said capacitor, for supplying a power to said control unit, said power supply receiving a power from said DC power source; and a voltage lowering device for, when said motor-driven compressor does not operate, setting the voltage of said capacitor to a voltage which is lower than a voltage of said DC power source and which allows said control unit to operate, said voltage lowering device being controlled by said controller.