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What is the product of open loop gain an...

What is the product of open loop gain and feedback ratio of the amplifier in a feedback oscillator.

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What is feedback in an amplifier circuit?

Derive the relationship between open loop gain and closed loop gain of an amplifier circuit with reference to feedback ratio.

Knowledge Check

  • If open loop gain and feedback ratio of a positive feedback oscillator are A are r respectively then closed loop gain A_(f) is

    A
    1
    B
    `lt`A
    C
    `lt`Ar
    D
    infinity

  • Statement I : The frequency of the output signal from a feedback oscillator depends on its feedback ratio. Statement II : A feedback oscillator circuit is made in such a way that the closed loop gain of the amplifier reaches to an infinite value.

    A
    Statement I is true statement II is true, statement II is a correct explanation for statement I.
    B
    Statement I is true statement II is true, statement II is not a correct explanation for statement I.
    C
    Statement I is true statement II is false.
    D
    Statement I is false statement II is true.

  • The pituitary detects a rising hormone concentration in blood and inhibits the gland secreting the hormone. This is a _________feedback loop.

    A
    positive
    B
    negative
    C
    longterm
    D
    both (a) and (c)

    • Similar Questions

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    Open loop gain of an amplifier is A. If a feedback oscillator is made by this amplifier then what feedback ratio is to be taken?

    What is the practical utility of positive feedback and negative feedback?

    Which of the following is an example of negative feedback loop in humans

    Without any any input signal a feedback oscillator gives output signal. Explain how the conservation of energy is not violated.

    If the length of a closed and open pipe is same then what will be the ratio of the fundamental frequencies______.

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