Answered: Draw the circuit diagram of a…

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

Draw the circuit diagram of a differential amplifier using one op amp and resistances as needed. Give the output voltage in terms of the input voltages and resistances.

Expert Solution

Step 1

The differential amplifier has two inputs attached to two different terminals of Op-amp. The equivalent circuit of differential amplifier with Op-amp, two inputs, feedback resistance and input resistances, is shown below:

Where,

The input at non-inverting terminal is “V₂”,

The input at inverting terminal is “V₁”,

The feedback resistance is “R_f”,

The input resistances are “R₁”, “R₂” and “R₃”.

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