Exam-style question
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Describe how negative feedback is used in operational amplifier circuits and its effect on gain.
Model answer
What a good answer should say
- Negative feedback in operational amplifier circuits involves feeding a portion of the output signal back to the inverting input.
- This reduces the overall gain of the amplifier, stabilizes the output, and improves linearity by minimizing distortion.
Explanation
Why this works
This answer is strong as it explains the mechanism of negative feedback and its impact on gain, which is crucial for understanding operational amplifier functionality. The question assesses the ability to articulate the role of feedback in enhancing circuit performance.
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