What is the input voltage and output current in the common base configuration of a transistor?

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HPCL Engineer Instrumentation 11 Aug 2021 Official Paper
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  1. VBE, IE respectively
  2. VCB, IC respectively
  3. VCB, IE respectively
  4. VEB, IC respectively

Answer (Detailed Solution Below)

Option 4 : VEB, IC respectively
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Detailed Solution

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SSC JE EE basic electronics 2 D9

Input Terminal Emitter–Base (EB)

Output Terminal Collector–Base (CB)

Input voltage: VEB

Output current: IC

Since for Amplification Application in BJT

EB Junction → Forward Biased (Low Impedance)

CB Junction → Reversed Biased (High Impedance)

Comparison:

 

Common Emitter (CE)

Common Collector (CC)

Common Base (CB)

Current gain (AI)

High

High

Low (unity)

Voltage gain (AV)

High

Low (unity)

High

Input resistance (Ri)

Medium

High

Low

Output resistance (R0)

Medium

Low

High

Phase change

180°

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