Transistor

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The basic function of transistor is to do amplification.The weak signal is given to the base transistor and amplified output is obtained in the collector circuit. One important requirement during amplification is that only the magnitude of the signal should increase and there should be no change in signal shape. this increase is magnitude of the signal without any change in shape is known as faithful amplification. In order to achieve this,means are provided to ensure that input circuit of the transistor remains forward biased and output circuit always remains reverse biased during all parts of the signal. This is known as transistor biasing.

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