Wednesday, April 8, 2020
Saturday, March 28, 2020
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
Monday, February 12, 2018
Zener and Avalanche Breakdown
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Zener
Breakdown
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Avalanche
Breakdown
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The doping in the formation of P-N junction is
High.
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The doping in the formation of P-N
Junction is low.
|
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The phenomenon is caused by tunneling or field emission.
In this the covalent bonds break spontaneously.
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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.
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Low reverse potential is required for
breakdown
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Higher reverse potential is required
for breakdown.
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In this the covalent bonds near the junction break due to high
reverse potential ~20 V and consequently electrons become free.
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In this the thermally generated electrons due to electric field
ionize other atoms and release electrons.
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