- Published in issue 6/1990 on page 41
Power zener diode
Power zener diodes are rare, hard-to-obtain and quite expensive electronic devices. The circuit described here is based on a handful of common discrete parts that simulate a high-power zener diode. Apart from the saving in cost, the discrete equivalent has an additional advantage in that it can be set up to meet a wide range of output voltage and power requirements without the need of changing components.