Patent ID: 6525666
Filing Date: 2003-02-25
Classification: H02J,H02M,Y02B,Y04S

Abstract:
A power supply circuit for an electrical apparatus having an internal circuit with a remote control function, the power supply circuit comprising: a converter for converting an a.c. voltage into a d.c. voltage and driving the internal circuit; a charge storage device for storing a charge produced by the converter; a voltage detector driven by the charge storage device for detecting a voltage of the charge storage device; a remote control signal receiver driven by the charge storage device for receiving a remote control signal from an external controller and producing a corresponding output signal; and a controller having a sub-microcomputer driven by the charge storage device and a main microcomputer driven by the converter, the sub-microcomputer for receiving the output signal of the remote control signal receiver and outputting a signal for activating the converter so that the converter drives the internal circuit.