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Which parasitic capacitors do not affect the frequency response of the C.E. stage, of the B.J.T.?

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Which parasitic capacitors do not affect the frequency response of the C.E. stage, of the B.J.T.?

(a) Cje and Cb

(b) Ccs and Cµ

(c) Cb and Cµ

(d) No parasitic capacitor gets deactivated

I have been asked this question in a national level competition.

My question is taken from Effect of Various Capacitors on Frequency Response in division Transistor Frequency Response of Analog Circuits

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Right answer is (d) No parasitic capacitor gets deactivated

Explanation: While observing the frequency response of a C.E. stage, we find that all the parasitic capacitances of the B.J.T. end up slowing the speed of the B.J.T. The frequency response of this stage is affected by all the parasitic capacitors.

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