BCECE Medical BCECE Medical Solved Papers-2008

  • question_answer
    The minimum potential difference between the base and emitter required to switch a silicon  transistor ON is approximately

    A)  IV           

    B)  3V

    C)  5V            

    D)  4.2V

    Correct Answer: A

    Solution :

    To switch on the transistor, the emitter-base junction of a transistor is forward biased while collector-base junction is reverse biased. The cut-off voltage for silicon is 1V, so to switch on a silicon transistor a potential difference of IV approximately is required between the base and emitter.


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