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zener diode is always operated in forward bais lowly doped p-n junction diode ,oderately doped p-n junction junction diode heavily doped p-n junction diode

zener diode is 
  1. always operated in forward bais
  2. lowly doped p-n junction diode
  3. ,oderately doped p-n junction junction diode 
  4. heavily doped p-n junction diode

Grade:12

1 Answers

jyoti bhatia
202 Points
5 years ago
Zener diodes are highly doped diodes. This means their behavior in forward bias will be same as a normal diode. But while in reverse bias their junction potential is increased. This provides more voltage handling capabilities as the breakdown voltage is higher.

So when these diodes are in forward bias the cutoff voltage might go upto few volts but when used in Reverse bias turns out to be very high values. And hence they are used as voltage regulators!

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