InterviewSolution
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InterviewSolution
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For transistor action, which of the following statements are correct:(a) Base, emitter and collector regions should have similar size and doping concentrations.(b) The base region must be very thin and lightly doped.(c) The emitter junction is forward biased and collector junction is reverse biased.(d) Both the emitter junction as well as the collector junction are forward biased. |
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Answer» The answer is (B) The base region must be very thin and lightly doped. When emitter junction is forward biased, electron hole recombination takes place, the base region. To ensure that only a small amount (about 50%) of electron-hole recombination may take place the base is made thin and lightly doped. |
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