Answered: Figure 1 shows the equivalent circuit…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

Figure 1 shows the equivalent circuit of a voltage amplifier with a source and a
load connected to its input and output, respectively. Suppose that the source
internal resistance is Rs = 5 kΩ, the amplifier input resistance is RIN = 95 kΩ, the
amplifier gain is A = 100, the amplifier output resistance is ROUT = 150 Ω and the
load resistance is RL = 5 kΩ. For a sinusoidal input with amplitude VS = 5 mV, what
is the amplitude of the voltage VL across the load resistor RL? What would the
voltage across the load be without the amplifier?

Rs 5 kn
ROUT
150 0
RIN
(Vs)5 mV
Vin
RL
VL
J5 kQ
95 kQ
100.Vin
Source
Amplifier
Load
Figure 1

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