Patent ID: 8947038
Filing Date: 2015-02-03
Classification: H02J,H02M,H02P,Y02B,Y04S

Abstract:
1. A power supply apparatus of a home appliance, comprising: a power line to supply alternating current (AC) power from an AC power source; first and second rectifiers, each of the first and second rectifiers rectifying the supplied AC power; a main relay connected to an input of the first rectifier to switch the AC power to the first rectifier; a switching mode power supply (SMPS) connected to an output of the second rectifier to generate a direct current (DC) voltage for driving the home appliance based on a rectified voltage from the second rectifier; a load switch connected to an output of the SMPS to switch the DC voltage from the SMPS; and a back electromotive force protection diode connected between a smoothing capacitor of the first rectifier and a smoothing capacitor of the second rectifier, and