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Negative Feedback in Op-Amps
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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?

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Choose AnswerChoose the Best Answer

A

Closed-loop configuration

B

Open-loop configuration

C

Both configurations are equally accurate

D

Neither configuration is stable

Understanding the Answer

Let's break down why this is correct

Closed-loop uses negative feedback, which feeds a small part of the output back to the input. Other options are incorrect because Many think a larger gain gives better accuracy, but open‑loop op‑amps amplify noise and are highly sensitive to component tolerances; It is easy to assume that more configurations are equally good, but open‑loop op‑amps are very unstable.

Key Concepts

Closed-loop vs Open-loop
Real-world limitations.
Topic

Negative Feedback in Op-Amps

Difficulty

medium level question

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understand

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Definition
Definition

Negative feedback in op-amps involves connecting the output back to the input to achieve self-correction. In negative feedback, the ideal op-amp forces the inverting and non-inverting inputs to be equal, maintaining stability and precise control.

Topic Definition

Negative feedback in op-amps involves connecting the output back to the input to achieve self-correction. In negative feedback, the ideal op-amp forces the inverting and non-inverting inputs to be equal, maintaining stability and precise control.

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