Diodes whose reverse ... junctions as ZD, the zener voltage and performance can be tested with this simple circuit. This battery operated compact circuit can be made in a small plastic case with two ...

This Design Idea describes a versatile test circuit for zener diodes after ... apply enough voltage to forward-bias most diodes, few can drive a zener diode into reverse conduction. Figure 1a shows a ...

Operation is as follows (see the figure): The alternating current is rectified by diode D1. A simple Zener-diode stabilization ... out of the loudspeaker. More circuits like this one can be ...