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Negative Feedback in Op-Amps
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In a negative feedback configuration of an op-amp, the output is connected back to the input to maintain stability and control. This process helps ensure that the voltages at the inverting and non-inverting inputs are kept equal due to the operation of the op-amp's high gain. This technique is referred to as __________ feedback.

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Choose the Best Answer

A

Positive

B

Negative

C

Direct

D

Linear

Understanding the Answer

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Answer

The blank should be filled with “negative. ” In a negative‑feedback op‑amp, the output is fed back to the input in such a way that any difference between the two input voltages is reduced, keeping the inputs nearly equal. Because the op‑amp has very high open‑loop gain, even a tiny error is amplified until the feedback drives the error to zero. This self‑correcting loop limits the output to a value that satisfies the external circuit’s requirements. For example, in an inverting amplifier the output is fed back through the resistor network so that the inverting input stays at virtual ground, ensuring the desired gain.

Detailed Explanation

When the op‑amp has very high gain, a small difference between the inputs will drive the output. Other options are incorrect because Positive feedback makes the output amplify the input difference instead of cancelling it; Direct feedback would mean the output is connected straight to the input without any attenuation or phase change.

Key Concepts

Negative Feedback in Op-Amps
Stability in Control Systems
Topic

Negative Feedback in Op-Amps

Difficulty

easy level question

Cognitive Level

understand

Practice Similar Questions

Test your understanding with related questions

1
Question 1

In an operational amplifier (op-amp) circuit, which configuration allows for better accuracy and stability in output voltage under real-world conditions, by utilizing negative feedback? Is it the closed-loop configuration or the open-loop configuration?

mediumEngineering
Practice
2
Question 2

In a negative feedback configuration using an op-amp, what is the primary effect on the output voltage when the input voltage increases?

hardEngineering
Practice
3
Question 3

Arrange the following steps in the process of how negative feedback operates in an operational amplifier (op-amp): 1) The output voltage is compared with the input voltage; 2) The error signal is generated; 3) The feedback is applied to the inverting input; 4) The op-amp adjusts the output to minimize the error.

easyEngineering
Practice
4
Question 4

In an operational amplifier (op-amp) circuit, which configuration allows for better accuracy and stability in output voltage under real-world conditions, by utilizing negative feedback? Is it the closed-loop configuration or the open-loop configuration?

mediumEngineering
Practice
5
Question 5

In a negative feedback configuration using an op-amp, what is the primary effect on the output voltage when the input voltage increases?

hardEngineering
Practice
6
Question 6

In a negative feedback configuration of an op-amp, the output is connected back to the input to maintain stability and control. This process helps ensure that the voltages at the inverting and non-inverting inputs are kept equal due to the operation of the op-amp's high gain. This technique is referred to as __________ feedback.

easyEngineering
Practice
7
Question 7

Arrange the following steps in the process of how negative feedback operates in an operational amplifier (op-amp): 1) The output voltage is compared with the input voltage; 2) The error signal is generated; 3) The feedback is applied to the inverting input; 4) The op-amp adjusts the output to minimize the error.

easyEngineering
Practice
8
Question 8

In an operational amplifier (op-amp) circuit, which configuration allows for better accuracy and stability in output voltage under real-world conditions, by utilizing negative feedback? Is it the closed-loop configuration or the open-loop configuration?

mediumEngineering
Practice
9
Question 9

In a negative feedback configuration of an op-amp, the output is connected back to the input to maintain stability and control. This process helps ensure that the voltages at the inverting and non-inverting inputs are kept equal due to the operation of the op-amp's high gain. This technique is referred to as __________ feedback.

easyEngineering
Practice
10
Question 10

Arrange the following steps in the process of how negative feedback operates in an operational amplifier (op-amp): 1) The output voltage is compared with the input voltage; 2) The error signal is generated; 3) The feedback is applied to the inverting input; 4) The op-amp adjusts the output to minimize the error.

easyEngineering
Practice

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