Patent ID: 7000147

Claim:
A computer power supply with a rapid self-error-check circuit, comprising: a self-detecting device; an LED displaying light and detecting button protrude from a casing of the computer power supply; thereby, the normality of the power supply is detected by pressing a detecting button and then the result is displayed through colors of the LED displaying light, the self-detecting device having a power supply operation detecting circuit and a power supply standby power source detecting circuit, wherein the power supply operation detecting circuit includes an AC power input end, a detecting switch, a rectifier, a power system, one of an auxiliary power source and standby power source, and a detector; the detector detects the power condition of a power system, and detects output voltage; the detected result is displayed by the LED displaying light, wherein the LED displaying light includes a light for the standby power source and a light for power output; a light for the standby power supply is green and the light for the power supply is yellow; the color of the light changes according to an output voltage of the standby power source, power supply, and predetermined signals.