Patent ID: 7215127

Claim:
A detecting fixture, used for detecting a capacitor with leakage current among a capacitor group in parallel connection; the fixture comprising: a reference voltage generator, used for outputting a first voltage; an impedance converter, used for converting the impedance of the capacitor group in parallel connection into a second voltage; a comparator, coupled with the output of the reference voltage generator and the output of the impedance converter, respectively; and a display unit, coupled with the output of the comparator, wherein when a thermal effect is applied to a capacitor among the capacitor group in parallel connection, the second voltage is altered and the comparator outputs a voltage difference corresponding to the altered second voltage, so that the display unit accordingly indicates whether or not a leakage current occurs; wherein the reference voltage generator has a first voltage divider, the impedance converter has a second voltage divider and the first voltage divider and the second voltage divider together form an electrical bridge.