COMMON COLLECTOR CONFIGURATION

INTRODUCTION:-

The COMMON-COLLECTOR CONFIGURATION (CC) is used as a current driver for

impedance matching and is particularly useful in switching circuits. The CC is also referred to as an

emitter-follower and is equivalent to the electron-tube cathode follower. Both have high input impedance

and low output impedance.In the CC, the input is applied to the base, the output is taken from the emitter, and the collector is

the element common to both input and output.

Circuit diagram:-

Gain:-

GAIN is a term used to describe the amplification capabilities of an amplifier. It is basically a ratio

of output to input. The current gain for the three transistor configurations (CB, CE, and CC) are ALPHA

(a), BETA (b), and GAMMA (g), respectively

formula:-

Purpose:-

The TRANSISTOR CONFIGURATION COMPARISON CHART gives a rundown of the

different properties of the three configurations.

Posted in: Electron devices