Question continued. 4 c) In the circuit shown in Figure Q4c), the operational amplifier has an input resistance, ra = 1 M2, an output resistance of 100 2 and open loop gain (AOL) of 104. Assuming that Rg= 1 MS2, R₁ = 20 ks2, R2 = 2 ks2, estimate the loop gain (AOLB, where ß is the feedback fraction) of the circuit and hence find values for the input and output resistance Rin and Ro. Rin R₁ R₂ ww = 10

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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4
c) In the circuit shown in Figure Q4c), the operational amplifier has an input
resistance, ra = 1 MQ, an output resistance of 100 2 and open loop gain (AOL) of
104. Assuming that Rg = 1 MQ2, R₁ 20 k2, R₂ = 2 kn, estimate the loop gain
(AOLB, where ß is the feedback fraction) of the circuit and hence find values for the
input and output resistance Rin and Ro.
+
R₁
Rin
R
खण
R₂
Rg
7
=
www
Figure Q4c
www
10
Transcribed Image Text:Question continued. 4 c) In the circuit shown in Figure Q4c), the operational amplifier has an input resistance, ra = 1 MQ, an output resistance of 100 2 and open loop gain (AOL) of 104. Assuming that Rg = 1 MQ2, R₁ 20 k2, R₂ = 2 kn, estimate the loop gain (AOLB, where ß is the feedback fraction) of the circuit and hence find values for the input and output resistance Rin and Ro. + R₁ Rin R खण R₂ Rg 7 = www Figure Q4c www 10
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