Common Base Amplifier Schematic Diagram. This tells us that the common base amplifier is non inverting. Common base amplifier vin 5 2 sin 0 0 12 2000 0 0 vbias 0 1 dc 0 95 r1 2 1 100 q1 4 0 5 mod1 v1 3 0 dc 15 rload 3 4 5k model mod1 npn tran 0 02m 0 78m plot tran v 5 2 v 4 end.

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It is used as a voltage amplifier or buffer in some high frequency applications. Presenting the common base amplifier. The common base circuit diagram cb shown in fig.

This tells us that the common base amplifier is non inverting.

It is used to provide voltage gain without any current gain. The biasing constraints are same but the applications of the signals are different. In this circuit care has to be taken such that correct impedance match is provided to the input signal. So the common base amplifier has high output impedance.