The output signal of a common-collector amplifier is always:-

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  1. Large than the input signal
  2. In phase with the input signal
  3. Out of phase with the input signal
  4. Exactly equal to the input signal

Answer (Detailed Solution Below)

Option 2 : In phase with the input signal
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Detailed Solution

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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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