Figure (Q1) shows an ideal voltage amplifier with a gain of +2 V/V implemented with an OpAmp connected in the noninverting configuration and a resistance R connected between theoutput and the input.a) Using Miller's theorem, show that the input resistance is Rn = -Rb) Using Norton's theorem to replace Vig, Rig and Rin with a signal current source and anequivalent parallel resistance. Show that by selecting Rig = R, the equivalent parallelresistance becomes infinite and the current I, into the load impedance Z, becomesVrig /RRig+2VasRRFigure (Q1)

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Figure (Q1) shows an ideal voltage amplifier with a gain of +2 V/V implemented with an Op Amp connected in the noninverting configuration and a resistance R connected between the output and the input. a) Using Miller's theorem, show that the input resistance is Rm = -R b) Using Norton's theorem to replace Vig, Rig, and Rin with a signal current source and an equivalent parallel resistance. Show that by selecting Rig = R, the equivalent parallel resistance becomes infinite and the current I, into the load impedance Z, becomes Vig /R +2 R Figure (Q1)

Figure (Q1) shows an ideal voltage amplifier with a gain of +2 V/V implemented with an Op Amp connected in the noninverting configuration and a resistance R connected between the output and the input. a) Using Miller's theorem, show that the input resistance is Rm = -R b) Using Norton's theorem to replace Vig, Rig, and Rin with a signal current source and an equivalent parallel resistance. Show that by selecting Rig = R, the equivalent parallel resistance becomes infinite and the current I, into the load impedance Z, becomes Vig /R +2 R Figure (Q1)

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

Figure (Q1) shows an ideal voltage amplifier with a gain of +2 V/V implemented with an Op
Amp connected in the noninverting configuration and a resistance R connected between the
output and the input.
a) Using Miller's theorem, show that the input resistance is Rn = -R
b) Using Norton's theorem to replace Vig, Rig and Rin with a signal current source and an
equivalent parallel resistance. Show that by selecting Rig = R, the equivalent parallel
resistance becomes infinite and the current I, into the load impedance Z, becomes
Vrig /R
Rig
+2
Vas
R
R
Figure (Q1)

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