98.1.1 - Applications of Feedback in Amplifier Circuits (Part-B)
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Practice Questions
Test your understanding with targeted questions
Define trans-impedance.
💡 Hint: Think about how amplifiers convert current to voltage.
What does negative feedback do in amplifier circuits?
💡 Hint: Consider its effect on the output relative to the input signal.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to trans-impedance when negative feedback is applied?
💡 Hint: Think about how feedback stabilizes signals.
True or False: Negative feedback always increases amplifier gain.
💡 Hint: Remember feedback's role in amplifier behavior.
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Challenge Problems
Push your limits with advanced challenges
Given a common emitter amplifier with R = 10 kΩ and feedback β = 50, calculate the new Z' considering typical feedback effects.
💡 Hint: Focus on the interaction between feedback and resistance values.
If an amplifier initially has an input resistance of 20 kΩ and feedback configuration reduces this by a factor of (1 + βZ'), what is the new input resistance if β = 50?
💡 Hint: Work through the feedback formulas carefully.
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