Patent ID: 8482297
Filing Date: 2013-07-09
Classification: G01R

Abstract:
1. A system for testing a DC power supply performance, comprising: a comparison module capable of receiving DC voltage signals from the DC power supply, comparing the DC voltage signals with a reference voltage respectively, and outputting a voltage level signal when the DC power supply is normal; a judge module capable of receiving the voltage level signal, and outputting a control signal according to the voltage level signal; and an alarm module capable of receiving the control signal, and indicating status of the DC power supply according to the control signal; wherein the DC power supply comprises a first voltage output terminal; the comparison module comprises a first comparator, a second comparator, a first resistor, a second resistor, and a third resistor; a non-inverting input terminal of the first comparator and an inverting input terminal of the second comparator are capable of receiving the reference voltage; an inverting input terminal of the first comparator is grounded via the third resistor; a non-inverting input terminal of the second comparator is electrically coupled to the first voltage output terminal via the first resistor; the second resistor is electrically coupled between the inverting input terminal of the first comparator and the non-inverting input terminal of the second comparator.