Patent ID: 6339340
Filing Date: 2002-01-15
Classification: G01R

Abstract:
An apparatus for detecting capacity of a power supply to supply a standby power, comprising:a control unit for controlling the apparatus; a dummy-loading circuit, for coupling to the standby power and controlled by the control unit, to provide a load to the standby power; and a voltage monitoring circuit, coupled to the dummy-loading circuit and the control unit, for monitoring a voltage of the standby power through the dummy-loading circuit and for outputting a signal to the control unit, wherein while the voltage of the standby power is being detected, the control unit activates the dummy-loading circuit and receives information of variations of the standby power from the signal outputted from the voltage monitoring circuit, thereby to detect the capacity of the standby power to be below a required minimum amount when the variation of the voltage of the standby power is detected to exceed a prescribed voltage.