28 The circuit in Figure P15.28 is an alternative configuration of a phase- shift oscillator. (a) Assume that R₁ = R₂ = R3 = RA₁=RA₂ = RA3 = R and C₁ C₂ = C3=C. Show that the frequency of oscillation is Part 2 Analog Electronics wo = √3/RC. (b) Assume equal magnitudes of gain in each amplifier stage. What is the minimum magnitude of gain required in each stage to sustain oscillation? RF2 RF3 www RF1 www RA2 RA3 RAI ww R3 ww A₂ A3 A₁ ww R₁ C₁ Figure P15.28 + ww R₂ + C3 000

28 The circuit in Figure P15.28 is an alternative configuration of a phase- shift oscillator. (a) Assume that R₁ = R₂ = R3 = RA₁=RA₂ = RA3 = R and C₁ C₂ = C3=C. Show that the frequency of oscillation is Part 2 Analog Electronics wo = √3/RC. (b) Assume equal magnitudes of gain in each amplifier stage. What is the minimum magnitude of gain required in each stage to sustain oscillation? RF2 RF3 www RF1 www RA2 RA3 RAI ww R3 ww A₂ A3 A₁ ww R₁ C₁ Figure P15.28 + ww R₂ + C3 000

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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