PHYSICS 3K03 Lecture Notes - Lecture 17: Depletion Region, Early Effect

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22 Jun 2018

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Early Effect

Early Effect Early voltage:

- More  More reverse bias in CB  CBJ depletion region widens  Base

region narrows  more current diffused

Early Voltage

collector current without considering Early Effect

Output resistance looking into the collector

- inverse of slope in vs. diagram

Biasing in BJT

Amplifier

Circuits

Single power supply:

Design for

- Use above two conditions to obtain two equations in

- Calculate again to obtain and

Dual power supply:

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