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Analog circuits miscellaneous

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Analog circuits miscellaneous
  1. A circuit using an OPAMP shown below, has

    1. voltage series feedback
    2. voltage shunt feedback
    3. current shunt feedback
    4. current series feedback
Correct Option: B

If =
Vi - Vo
 ≈ -
Vo
 = βVoβ = -
1
RfRfRf

As feedback current is proportional to output voltage, it is a voltage-shunt feedback amplifier.


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