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Voltage shunt feedback amplifier forms
  • a)
    A negative feedback
  • b)
    A positive feedback
  • c)
    Both positive and negative
  • d)
    None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Voltage shunt feedback amplifier formsa)A negative feedbackb)A positiv...
A voltage shunt feedback amplifier forms a negative feedback because, any increase in the output signal results in a feedback signal into the inverting input causing a decrease in the output signal.
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Voltage shunt feedback amplifier formsa)A negative feedbackb)A positiv...
Introduction:
A voltage shunt feedback amplifier is a type of operational amplifier (op-amp) configuration in which the output voltage is fed back to the input through a voltage divider network. This feedback arrangement is commonly used to stabilize and improve the performance of the amplifier.

Negative Feedback:
Negative feedback is a technique used in amplifiers to reduce distortion, noise, and improve linearity and stability. In a voltage shunt feedback amplifier, the feedback signal is applied in such a way that it opposes the input signal. This results in a negative feedback loop, as the feedback voltage subtracts from the input voltage.

Advantages of Negative Feedback:
Negative feedback has several advantages in amplifier circuits:
1. Improved Linearity: Negative feedback reduces non-linear distortion by reducing the gain at high frequencies.
2. Reduced Noise: It decreases the effective noise figure of the amplifier by reducing the overall gain.
3. Increased Bandwidth: Negative feedback can increase the bandwidth of the amplifier by reducing the gain at higher frequencies.
4. Improved Stability: It helps to stabilize the amplifier by reducing the effects of component tolerances, temperature variations, and load variations.

Positive Feedback:
Positive feedback, on the other hand, is a technique in which the feedback signal reinforces the input signal. It can cause the amplifier to become unstable and exhibit oscillatory behavior. In a voltage shunt feedback amplifier, positive feedback is not present as the feedback signal is subtracted from the input signal.

Conclusion:
In summary, a voltage shunt feedback amplifier forms negative feedback. The feedback signal is subtracted from the input signal, resulting in improved linearity, reduced noise, increased bandwidth, and improved stability. Positive feedback is not present in this configuration.
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Voltage shunt feedback amplifier formsa)A negative feedbackb)A positive feedbackc)Both positive and negatived)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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