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Monday, March 23, 2020

Assignment 3 (BJT)





Q10  Explain the h-Parameter model for 2-port networks. Also, draw and explain the simplified model for Common Emitter Configuration of BJT.




Last Date: 10th April, 2017


Bipolar Junction Transistor Notes

Monday, February 12, 2018

Zener and Avalanche Breakdown


Zener Breakdown
Avalanche Breakdown
The doping in the formation of P-N junction is
High.
The doping in the formation of P-N
Junction is low.
The phenomenon is caused by tunneling or field emission.
In this the covalent bonds break spontaneously.

The phenomenon is caused by impact ionization and avalanche multiplication.
The covalent bonds break as a result of collision of electrons and holes with the valence electrons.
Low reverse potential is required for
breakdown
Higher reverse potential is required
for breakdown.
In this the covalent bonds near the junction break due to high reverse potential ~20 V and consequently electrons become free.
In this the thermally generated electrons due to electric field ionize other atoms and release electrons.