Patent ID: 9130450
Filing Date: 2015-09-08
Classification: H02J,H02M,Y02B,Y04S

Abstract:
1. A power supply system comprising: a switching power supply, which rectifies and smoothes an AC voltage of an AC power supply to generate a first DC voltage in a normal mode, in which oscillation is performed; a control unit, which controls the switching power supply to switch between the normal mode and a power saving mode, in which the oscillation of the switching power supply is stopped; and a low-capacity power supply circuit, which supplies power to the control unit in the power saving mode, and which includes: wherein, when switching from the power saving mode to the normal mode, the control unit generates a restart signal to restart the oscillation of the switching power supply by power supplied from the low-capacity power supply circuit, and the control unit transmits the restart signal to the switching power supply by power accumulated in the third capacitor.