A common-emitter amplifier has values of Cbc = 5pF and Av = 15. What is the Miller input capacitance for the circuit?
A) 80 pF
B) 7 pF
C) 163.1 pF
D) None of these is correct.

Question

Quizplus · Accepted Answer

The Miller input capacitance (Cm) can be calculated using the formula Cm = Cbc * (1 + |Av|), where Cbc is the capacitance between the base and collector, and Av is the voltage gain. Substituting the given values, Cm = 5pF * (1 + |15|) = 5pF * 16 = 80pF.

A Common-Emitter Amplifier Has Values of Cbc = 5pF and Av