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Categories: Electronic amplifiers

Common source

A common-source amplifier is one of the common configurations of FET electronic amplifier.

Characteristics

Inherent voltage gain:

With C_S:

- g m (R D | | R l o a d)

Without C_S:

$-g_m (R_D || R_{load}) \over 1 + g_m R_S$

Input resistance:

R 1 | | R 2

Current gain:

$A_{vm} {r_{in} \over R_{load}}$

Output resistance:

R D

Transistor amplifiers

Categories: Electronic amplifiers

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07-14-2008 23:18:10
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