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The figure shows a phase-shift oscillator circuit with voltage follower buffer stages.

The value of R2/R required for sustained oscillations is _____.
[Assume ideal op-amps and neglect loading effect].
    Correct answer is '8'. Can you explain this answer?
    Verified Answer
    The figure shows a phase-shift oscillator circuit with voltage followe...
    • The basic amplifier of the circuit is the op-amp A3.
    • The output of amplifier is connected to 3 stage RC filter.
    • Voltage followers eliminate loading effect of each stage.

    Transfer function of first RC network

    RC networks are identical and no loading effect

    The amplifier A3 is connected in inverting mode

    The loop gain is

    Substitute real part of denominator to zero

    At this frequency
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    The figure shows a phase-shift oscillator circuit with voltage follower buffer stages.The value ofR2/R required for sustained oscillations is _____.[Assume ideal op-amps and neglect loading effect].Correct answer is '8'. Can you explain this answer?
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    The figure shows a phase-shift oscillator circuit with voltage follower buffer stages.The value ofR2/R required for sustained oscillations is _____.[Assume ideal op-amps and neglect loading effect].Correct answer is '8'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about The figure shows a phase-shift oscillator circuit with voltage follower buffer stages.The value ofR2/R required for sustained oscillations is _____.[Assume ideal op-amps and neglect loading effect].Correct answer is '8'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The figure shows a phase-shift oscillator circuit with voltage follower buffer stages.The value ofR2/R required for sustained oscillations is _____.[Assume ideal op-amps and neglect loading effect].Correct answer is '8'. Can you explain this answer?.
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