Reverse leakage testing Reverse leakage may be measured only after removing the component from the circuit board because shunt resistances abound in almost all circuits. Good silicon rectifiers and ...

If you have a Zener diode (ZD) of unknown characteristics or if you want to use reverse-biased transistor junctions as ZD, the zener voltage and performance can be tested with this simple circuit.

The circuit is simple enough: it uses a capacitor, a resistor, and a pair of diodes (one of them a zener diode). He uses this basic circuit to drive simple regulators with input and output filter ...

However, the circuit described here performs a simple go/no-go test on these diodes while limiting forward current and reverse voltage to safe levels (see the figure).