| 摘要 |
A printed circuit board for an EMI(Electromagnetic Interference) filter of an air conditioner is provided to exchange an EMI board by separating a connector connected to an electronic circuit board. A power cord(10) provides a power to an electronic circuit board of an air conditioner, and provides a normal power 220V to an inner unit and an outer unit of the air conditioner. A terminal board(20) and a relay(30) diverge a power transmitted to the inner unit of the air conditioner to the outer unit of the air conditioner, and are operated by a control of the inner and outer unit. An EMI filter board(40) is connected to the terminal board and the relay, and diverges the power. The EMI filter board removes a noise and provides the power to the inner unit and the outer unit of the air conditioner. An electronic circuit board(50) receives the power through the EMI filter board, and performs a control command transmitted from a remote controller by controlling the inner unit of the air conditioner. The electronic circuit board controls automatically the air conditioner to be operated in a normal state by controlling the outer unit of the air conditioner. A connector(60) connects the EMI filter board to the electronic circuit board, and transmits the power to the inner unit of the air conditioner. A fuse(70) protects the electronic circuit board of the inner unit by cutting off the power when an over-current is included in the power applied through the connector. A varistor(80) is connected to the fuse in parallel, and cuts off an external surge noise. The varistor protects the electronic circuit board by applying a current if a voltage spark is generated. A transformer(90) is connected to an output terminal of the varistor and the fuse, and drops a power to a proper voltage to be used in the electronic circuit board.
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