From Figure 3, write node-voltage equations: one for each inputa.terminal of the op amp.b. The expression for the load current (i.) can be written as a function of the inputvoltage (V) and the load voltage (v.)iz = Avin + Bv,b.1.What is the expression for A?What should be the condition for R, R, R, and R4, so that B isb.2.zero? (NB: this condition will make i, depend only on v, and not on R.)R4R3OA1R2R1RLVinVLiLFigure 3

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From Figure 3, write node-voltage equations: one for each input terminal of the op amp. o. The expression for the load current (i,) can be written as a function of the input voltage (vm) and the load voltage (v,) i, = Av, + Bv, b.1. What is the expression for A? b.2. What should be the condition for R,, R, R, and R, so that B is zero? (NB: this condition will make i, depend only on v, and not on R.) R4 R3 OA1 R2 R1 Vin RL Figure 3

From Figure 3, write node-voltage equations: one for each input terminal of the op amp. o. The expression for the load current (i,) can be written as a function of the input voltage (vm) and the load voltage (v,) i, = Av, + Bv, b.1. What is the expression for A? b.2. What should be the condition for R,, R, R, and R, so that B is zero? (NB: this condition will make i, depend only on v, and not on R.) R4 R3 OA1 R2 R1 Vin RL Figure 3

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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Concept explainers

Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.

Question

From Figure 3, write node-voltage equations: one for each input
a.
terminal of the op amp.
b. The expression for the load current (i.) can be written as a function of the input
voltage (V) and the load voltage (v.)
iz = Avin + Bv,
b.1.
What is the expression for A?
What should be the condition for R, R, R, and R4, so that B is
b.2.
zero? (NB: this condition will make i, depend only on v, and not on R.)
R4
R3
OA1
R2
R1
RL
Vin
VL
iL
Figure 3

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