Answered: VO να + AO₁ ΑΟΖ. + R₂ 20 ΚΩ R₁ 1 ΚΩ R₂…

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

Compared to the classic triple op amp Al, the Al in the figure uses fewer resistors. The half nominal position potentiometer knob is used to maximize CMRR. Show that vo=(1+2•R2/R1)(v₂-v1).

120-
ΤΟ
ΑΟ,
+
ΑΟΣ,
R₂
20 ΚΩ
R₁
1 ΚΩ
R₂
20 ΚΩ
H11
VO
R3
m
30 ΚΩ
μ
A03

Expert Solution

Step 1

Here Potentiometer divides the resistor into two equal halves

Figure 2 used to demonstrate how the Potentiometer divides the resistor R1

Current is zero at input terminals of opamp

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