To Study The Characteristic Of Zener Diode

Objectives

To obtain the voltage-current characteristic curve for a Zener diode

Basic Information

The zener diode is a special type of PN junction, which is designed to operate in the reverse breakdown region. Once the reverse bias potential reaches a specific voltage level, i.e. the Zener breakdown voltage, the ideal zener diode starts behaving as a fixed voltage source with zero internal resistance. All practical diodes have some internal resistance even though, typically, it is limited to 5 to 20 W. The internal resistance is the source of variation in zener voltage with current levels flowing through it.

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lab-session-10-zener.pdf (0.30 MB )