Practice Solutions to Gain Issues - 27.5 | 27. Common Emitter Amplifier (contd.) (Part B) | Analog Electronic Circuits - Vol 1
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Knowledge

27.5 - Solutions to Gain Issues

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the purpose of the emitter resistor in a common emitter amplifier?

💡 Hint: Think about the stability of the circuit when parameters change.

Question 2

Easy

How does adding a coupling capacitor help with gain?

💡 Hint: Consider how AC and DC signals interact with circuit components.

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 happens to the voltage gain when an emitter resistor is added to the amplifier?

  • It increases
  • It decreases
  • It remains constant

💡 Hint: Think about how the presence of feedback components influences gain.

Question 2

True or False: The introduction of a coupling capacitor can affect the DC operating point of the amplifier.

  • True
  • False

💡 Hint: Consider the roles of AC and DC signals.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design a common emitter amplifier that maintains a voltage gain of at least 50 while keeping R_E to a minimum. Specify component values and justification.

💡 Hint: Use A = -g_m × R_C / (1 + g_m × R_E) and ensure stability.

Question 2

How does a high β transistor affect the design of the common emitter amplifier? Provide a theoretical analysis and potential solutions.

💡 Hint: Consider how β influences gain calculations and stability factors.

Challenge and get performance evaluation