The circuit in Figure P15.28 is an alternative configuration of a phaseshift oscillator. (a) Assume that (R_{1}=R_{2}=R_{3}=R_{A_{1}}=R_{A_{2}}=R_{A_{3}}

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The circuit in Figure P15.28 is an alternative configuration of a phaseshift oscillator.

(a) Assume that $R_{1}=R_{2}=R_{3}=R_{A_{1}}=R_{A_{2}}=R_{A_{3}} \equiv R$ and $C_{1}=C_{2}=C_{3} \equiv C$. Show that the frequency of oscillation is $\omega_{o}=\sqrt{3} / R C$.

(b) Assume equal magnitudes of gain in each amplifier stage. What is the minimum magnitude of gain required in each stage to sustain oscillation?

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Microelectronics Circuit Analysis And Design

ISBN: 9780071289474

4th Edition

Authors: Donald A. Neamen

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Question Posted: May 08, 2024 12:01 PM

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The circuit in Figure P15.28 is an alternative configuration of a phaseshift oscillator. (a) Assume that (R_{1}=R_{2}=R_{3}=R_{A_{1}}=R_{A_{2}}=R_{A_{3}}

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RF2 RFI www RF3 www RA2 RAI ww www R3 RA3 A2 ww ww A ww A3 vo ww + R2 C3 + R C Figure P15.28

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Microelectronics Circuit Analysis And Design

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