The zener diode is a type of semiconductor diode, consisting of a p-n junction with high doping concentrations on either side of the junction. It acts as a rectifier until the applied reverse voltage reaches a certain value, known as the Zener breakdown voltage, when the device becomes conducting. This effect occurs as a result of electrons being excited directly from the valence band into the conduction band. Zener diodes are used in voltage-limiting circuits and are named after C. M. Zener. Research Zener Diode
 
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert