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Common base amplifier voltage gain

by Physicist3
Tags: amplifier, base, common, gain, voltage
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Physicist3
#1
Apr21-13, 05:25 PM
P: 72
Hi,

I have a common base amplifier circuit but im not sure of the equation to use to calculate the voltage gain? Could someone help me please
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carlgrace
#2
Apr21-13, 10:52 PM
P: 555
Av = gmRl where gm is the transconductance of the transistor and Rl is the equivalent load resistance at the drain/emitter.

If it is a BJT then gm is Ic/vt where Ic is the collector current and vt is the thermal voltage kT/q.


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