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Suppose an amplifier is operating with vo = +10 V. What is the input voltage vid if (a) A = 100? (b) A = 10,000? (c) A = 120 dB?

Suppose an amplifier is operating with vo = +10 V. What is the input voltage vid if (a) A = 100? (b) A = 10,000? (c) A = 120 dB?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Suppose an amplifier is operating with vo = +10 V. What is the input voltage vid if (a) A = 100? (b) A = 10,000? (c) A = 120 dB?

Expert Solution
Step 1

Given v0 = 10 V

a) A = 100

Calculating input voltage vid

Av=v0vid100=10 Vvidvid=0.1 V=100 mV

Step 2

b) A = 10,000

Calculating input voltage vid

Av=v0vid10,000=10 Vvidvid=1 mV

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