Question

To draw the characteristic curve of zener diode and determine its reverse breakdown voltage readings

Answer 1

Image shows the characteristic curve of zener diode and determine its reverse breakdown voltage readings

Answer 2

To draw the characteristic curve of zener diode and to determine the reverse breakdown voltage we will have to do the following:

• Rig up the circuit.
• Make sure voltmeter and ammeter are in working condition.
• Make sure you get a zero reading when rheostat is taken to one of the farther ends.
• By varying the rheostat make sure you increase the voltage in small steps which in turn will lead to increase in current.
• At a particular voltage 'Vb' the current rises sharply. This voltage is nothing but the breakdown voltage.
• After this, the voltage becomes constant whereas the reverse current goes on increasing.