State the need of cascade amplifier and draw circuit diagram of 2-stage direct coupled amplifier.

State the need of cascade amplifier and draw circuit diagram of 2-stage direct coupled amplifier.
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Need:- The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in order to obtain greater voltage and power gain, cascade amplifiers are used.

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