When the emitter resistor is bypassed with a capacitor, how is the gain of the amplifier affected? What elements determine the overall voltage gain of a common-emitter amplifier? In a common emitter amplifier. Assume that the coupling capacitor in the collector is shorted. What dc voltage will appear at the collector of the transistor? Which among the 3 amplifiers has the highest gain? Why? Justify your answer.

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Multistage Amplifier

The multistage amplifier is generally a voltage or power amplifier. The multistage amplifier has a number of single stage amplifier that are cascaded together. Since a single stage amplifier output is not useful, they are being replaced with multistage amplifiers or multistage transistor amplifiers. The multistage amplifier are used where the gain required is high or the input signal is very small such that only a single stage amplifier cannot amplify it.