while working on Power supply boards we need to discharge the main High voltage Capacitor.There may be current charge up to 400 v DC . such capacitor are very dangerous to touch with bare hands. Discharge it by shorting terminals may damage the PCB itself
So I made this simple tool. by using this we can safely discharge the voltage in big capacitors. even we can know the polarity of capacitor.
once we connect an LED start Glowing and goes off when the capacitor discharge completely.
the green LED lights indicate right polarity .and the Red LED indicate the Polarity reversed. in any polarity it discharge the capacitor.
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