POWER CONVERSION APPARATUS AND AIR CONDITIONER INCLUDING THE SAME

摘要

A power conversion apparatus includes a rectifier to rectify a voltage of an input alternating current (AC) power source and a voltage drop device to output a dropped voltage using the voltage from the rectifier, and the voltage drop device includes a transformer and a communication voltage output device provided at a secondary side of the transformer to output a first direct current (DC) voltage for operation of a communication device. The communication voltage output device includes a first resistor provided at the secondary side of the transformer to reduce an output change rate of the first DC voltage and first and second zener diodes connected between the first resistor and ground to limit an upper limit of the first DC voltage. Accordingly, it is possible to stably supply a voltage to a communication unit while reducing standby power.

主权项

1. A power conversion apparatus comprising:
a rectifier to rectify a voltage of an input alternating current (AC) power source; and a voltage drop module to output a dropped voltage using the voltage from the rectifier, wherein the voltage drop module includes:
a transformer having a primary side and a secondary side; anda communication voltage output module provided at the secondary side of the transformer to output a first direct current (DC) voltage to operate a communication module, and wherein the communication voltage output module includes:
a first resistor provided at the secondary side of the transformer to reduce an output change rate of the first DC voltage; andfirst and second zener diodes connected between the first resistor and the ground to limit an upper limit of the first DC voltage.