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[edit] Eh

[edit] Configurational Bias

There are three configurations of a transistor. Configuration is the method of connecting any one terminal of transistor common to both input and output circuits. The three types are listed below.
1. Common base (Grounded base) (CB)

Here base is common to both input and output. Emitter-base jn is fwd-biased and collector-base jn is rev-biased.
See full article: Common base

2. Common emitter (CE)

Here emitter terminal is common to both input and output. Emitter-base jn is fwd-biased and collector-base jn is reverse biased.
See full article: Common emitter

3. Common collector (Emitter follower) (CC)

Here collector terminal is common to both input and output. Load is connected to emitter.
See full article: Common collector

[edit] Comparison

Parameter CB CE CC
Phase shift between input and output zero 180 zero
Current gain less than 1 high high
Voltage gain high high less than 1
Power gain moderate high low to moderate
Input resistance low moderate high
Output resistance high moderate low

[edit] Bollywood

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