1.48 Consider the voltage-amplifier circuit model shown in Fig. 1.16(b), in which Avo = 100 V/V under the following conditions:
(a)Ri = 10Rs, RL = 10Ro
(b)Ri = Rs, RL = Ro
(c)Ri = Rs/10, RL = Ro/10
Calculate the overall voltage gain vo/vs in each case, expressed both directly and in decibels.
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