Hybrid-π model- Junction providing transition capacitance

Q.  Which among the following plays a cardinal role in providing the transition capacitance in hybrid π model?
- Published on 23 Sep 15

a. Forward biased base-emitter junction
b. Reverse-biased collector base junction
c. Forward biased collector base junction
d. Reverse-biased base-emitter junction

ANSWER: Reverse-biased collector base junction

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    Discussion

  • Satyawati   -Posted on 30 Sep 15
    In hybrid- π model, the capacitance offered by reverse-biased collector base junction is known as transition capacitance.

    Apart from this, forward-biased base emitter junction also provides the capacitance known as diffusion capacitance.

    Howerver, with respect to the configuration of hybrid π model, only two capacitances are offered corresponding to forward & reverse-biased nature of junctions.

    Since the transition capacitance is provided by reverse-biased collector base junction, it is also renowned as collector junction barrier potential.

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