Patent ID: 9171241
Filing Date: 2015-10-27
Classification: G03G,G06K,H02H

Abstract:
1. A power supply apparatus, comprising: a first power supply unit including a rectification unit for rectifying an input voltage input from an AC power source and a first capacitor for smoothing a voltage rectified by the rectification unit, the first power supply unit configured to output a first voltage by converting the input voltage; a second power supply unit including a rectification unit for rectifying an input voltage input from the AC power source and a second capacitor for smoothing a voltage rectified by the rectification unit, the second power supply unit configured to output a second voltage different from the first voltage; a switch unit disposed in a power supply path from the AC power source to the second power supply unit so as to perform supply and cut-off of the voltage input from the AC power source to the second power supply unit; a detection unit configured to detect that a predetermined voltage or higher is supplied from the AC power source to the first power supply unit; and a control unit configured to turn the switch unit off by stopping the output with the first voltage from the first power supply unit so as to cut off a voltage from the AC power source to the second power supply unit, when the detection unit detects that the predetermined voltage or higher is supplied to the first power supply unit.