Practice - Effect of Feedback: On Gain, Bandwidth, Input Resistance, Output Resistance, Distortion
Practice Questions
Test your understanding with targeted questions
What effect does negative feedback have on amplifier gain?
💡 Hint: Recall the formula for closed-loop gain.
How does negative feedback influence bandwidth?
💡 Hint: Consider the gain-bandwidth product.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to closed-loop gain when negative feedback is applied?
💡 Hint: Refer to the core formula for closed-loop gain.
True or False: Negative feedback always increases distortion.
💡 Hint: Think about what feedback does to error signals.
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Challenge Problems
Push your limits with advanced challenges
Design a feedback amplifier where you need a specific closed-loop gain of 50. Given that your open-loop gain (A) is 200,000, what feedback factor βF should you use?
💡 Hint: Substitute into the closed-loop gain equation and solve for βF.
An op-amp circuit uses negative feedback and is subject to 0.5 mV RMS noise at input. What will be the output noise if the open-loop gain is 10,000 and βF is 0.01?
💡 Hint: Use the noise reduction formula provided.
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Reference links
Supplementary resources to enhance your learning experience.