Characteristics of Zener diode

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Purpose: -

Study the features and determine the Zener dynamics breakdown

Apparatus: -

Diener diode, ammeter, Resistor, voltmeter, breadboard, wires

Circuit Diagram:-


 


Opinion: -

A dot-shaped crystalline diode with a strong anti-depressant effect is known as the Zener diode.

The Zener Diode has a set bias value that is used repeatedly in the drop down mode. There are two types of fractures.


1. Avalanche effect: -

The avalanche fall controls on a simple doped Zener diode that is Vz above 6V.

2. Zener effect: -

This effect is particularly important for high-voltage diodes with a Vz below 6V. Usually the PN junction of the Zener diode is heavily doped. Due to excessive impurity use the depletion layer will be smaller. When recurrent recurrence increases the potential for the entire deterioration layer is higher. This is stronger than the electron in the outer shell. Because of this energy, electrons are released from the parent nuclei and become free electrons. This ionization, which is the result of the magnetic field, is known as the Zener effect. The result is a large number of free carriers that also increase reverse saturation current.

Tabular column:-

          Process: -

1) Connecting the circuit according to the drawing.

2) Vary voltage in steps of 0.5 volts and record the corresponding current.

3) There will be a sudden increase in power current. Note this voltage

4) Arrange the graph between V v / s I

Nature of Graph:-


 


Results: -

1) Zener voltage = V

2) The diode  can be taken several times in the breakdown circuit.

 

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