A CE amplifier uses a Wilson source as an active load. npn transistors have a beta    of 100 and an Early voltage of 100, and pnp transistors have a beta of 75 and an    Early voltage of 80. Give a design such that ICQ=10mA from a 20-volt DC supply.    What is the amplifier's voltage gain?

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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.