Practice Upper and Lower Limits of R - 99.4.2 | 99. Applications of feedback in amplifier circuits (Part-C) | Analog Electronic Circuits - Vol 4
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Knowledge

99.4.2 - Upper and Lower Limits of R

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the role of feedback in amplifiers?

💡 Hint: Think about how signals are processed.

Question 2

Easy

Define loop gain in the context of feedback systems.

💡 Hint: What happens to gain in a round-trip loop?

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the main purpose of feedback in an amplifier?

  • To increase gain
  • To enhance stability
  • To decrease input resistance

💡 Hint: Consider why stability might be crucial in circuit design.

Question 2

True or False: A higher loop gain is always better.

  • True
  • False

💡 Hint: What can occur if the loop gain is too high?

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You are designing a feedback amplifier with specified conditions for input resistance and loop gain. Given parameters like beta and collector current, calculate the maximum and minimum values for R and justify your choice.

💡 Hint: Start with examining both the upper and lower limits of the resistor.

Question 2

A two-stage amplifier uses feedback, and each stage has different beta values. Calculate the cumulative feedback factor and consequently the effective resistance needed for optimal performance.

💡 Hint: Consider how feedback from each stage influences the overall performance.

Challenge and get performance evaluation