Patent ID: 7854142

Claim:
An air conditioner comprising: a controller; a first compressor selectively electrically connected to a first phase advance capacitor responsive to a first control signal of the controller; and a second compressor selectively electrically connected to a second phase advance capacitor responsive to a second control signal of the controller, wherein the first phase advance capacitor is selectively electrically connected in parallel with the second phase advance capacitor responsive to at least one of the first control signal and second control signal of the controller, wherein a first switching relay is provided between the first compressor and the first phase advance capacitor; and a second switching relay is provided between the second compressor and the second phase advance capacitor, the first switching relay is connected to a place between the second compressor and the second phase advance capacitor; the second switching relay is connected to a place between the first compressor and the first phase advance capacitor; the first switching relay is connected to the first phase advance capacitor; the second switching relay is connected to the second phase advance capacitor; and the first switching relay and the second switching relay are switched responsive to the first and second control signals of the controller respectively.