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1. Consider the common emitter amplifier shown below with the following circuit parameters: β = 100, gm = 0.3861 A/V, r0 = ∞ rp = 259 Ω, Rs = 1 kΩ, RB = 93 kΩ, RC = 250 Ω, RL = 1 kW, C1 = ∞ and C2 = 4.7mF. The resistance seen by the source Vs is
(A): ∞
(B): 1258 Ω
(C): 258 Ω
(D): 93 kΩ
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By: guest on 02 Jun 2017 12.54 am
Zs = Rs + (RB || Brs) rc = 2.475 = 1.258 kV
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