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What is unbiased transistor? Explain the need for biasing the transistor. |
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Answer» Unbiased transistor is a transistor with its terminals not connected to any source. Biasing a transistor is applying a suitable DC voltage across the transistor terminals to operate the transistor in the desired region. Need for biasing a transistor are: (i) To make operating point to be at the centre of load line for faithful amplification. (ii) To make collector current independent of temperature variations. (iii) To make operating point stabilised even when one transistor is replaced by another. |
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