Question

Give the observation table readings of experiment :- To draw the characteristics of a zener diode and the and to determine its reverse breakdown voltage​

Answer 1

Answer:

Aim

To draw the characteristic curve of a Zener diode and to determine its reverse breakdown voltage.

Apparatus

A Zener diode (with small reverse breakdown voltage of about 6 volts), [i.e., Vz = 6 V], a ten volt battery, a high resistance rheostat, two 0-10 V voltmeter, one 0-100 mA ammeter, one 20 Ω. resistance, one way key, connecting wires.

Theory

Zener Diode. It is a semiconductor diode, in which the n-type and the p-type sections are heavily doped, i.e., they have more percentage of impurity atoms. This heavy doping results in a low value of reverse breakdown voltage (BVR). This value can be controlled during manufacture.

The reverse breakdown voltage of a Zener diode, is called Zener voltage (Vz). The reverse current that results after the breakdown, is called Zener current (Iz).

At breakdown, increase of VI increases II by large amount, so that V0 = VI– RI II becomes constant. This constant value of V0 which is the reverse breakdown voltage, is called Zener voltage

observation-