A three-pole feedback amplifier has a loop gain given by B(104) f T(f) = 1+j 55) (₁ f 103 TO)(¹+ (₁ 1+j 104 1+j f 105 1) Sketch Bode plots of the loop gain magnitude and phase for: ß = 0.005, and (b) B = 0.05. 2)Is the system stable or unstable in each case? 3)What is the phase margin in each case?

A three-pole feedback amplifier has a loop gain given by B(104) f T(f) = 1+j 55) (₁ f 103 TO)(¹+ (₁ 1+j 104 1+j f 105 1) Sketch Bode plots of the loop gain magnitude and phase for: ß = 0.005, and (b) B = 0.05. 2)Is the system stable or unstable in each case? 3)What is the phase margin in each case?

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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Question

A three-pole feedback amplifier has a loop gain given by
B(104)
f
f
f
1+j 16²) (1 + 1 1/²) (1 + 1 10₁)
5)
10³
104
T(f) =
=
1) Sketch Bode plots of the loop gain magnitude and phase for: ß = 0.005, and (b) ß = 0.05.
2)Is the system stable or unstable in each case?
3)What is the phase margin in each case?

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