a) Briefly explain regions of operations of BJT and what are the applications of each region?
Answers
Explanation:
The regions of a BJT are called emitter, base, and collector. A discrete transistor has three leads for connection to these regions.
Answer:
Active region: In this region, the base emitter junction is forward biased and the base-collector junction is reverse biased. This region is the normal transistor operation mode for amplification, and is characterized by the transistor current gain value, beta.
Cut-off region: In this region, both base-emitter and base-collector junctions are reverse biased and the transistor acts like an open switch. (IC = 0)
Saturation region: In this region, both base emitter and base-collector junctions are forward biased and the transistor acts like a closed switch. (VCE = 0)
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