Identify the features of CC configuration from the options given below.

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RRB ALP Mechanic Radio & TV 23 Jan 2019 Official Paper (Shift 3)
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  1. Highest input impedance and highest current gain.
  2. Highest input impedance and highest voltage gain.
  3. Lowest input impedance and lowest voltage gain.
  4. Lowest input impedance and highest voltage gain.

Answer (Detailed Solution Below)

Option 1 : Highest input impedance and highest current gain.
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Detailed Solution

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Explanation:

CC configuration has the highest input impedance and highest current gain.

All the configurations are used in different circuits based on their applications:

Parameters

Common-Emitter

(CE)

Common-Base

(CB)

Common-Collector

(CC)

Input resistance

Moderate

Low

High

Output resistance

High

High

Low

Voltage gain

High

High

About 1

Current gain (β )

High

Low, about 1

High (1+β )

Power

gain

High

Moderate

Low

A phase shift between input and output.

1800

00

00

Applic-ation

Voltage amplifier, audio frequency applica-tions.

Current buffer,

high-frequency applica-tions

Voltage buffer, impedance matching

 
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