Preview of practice Small Signal Equivalent Circuit (25.2) - Common Emitter Amplifier (Part B)
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Small Signal Equivalent Circuit

Practice - Small Signal Equivalent Circuit

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What happens to capacitors in small signal equivalent circuits?

💡 Hint: Think about how they behave in AC analysis.

Question 2 Easy

What is the equation for collector current I_C in terms of base current I_B?

💡 Hint: Remember the relationship between base and collector currents.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the small signal equivalent circuit treat DC values as?

Zero
Infinity
Constant

💡 Hint: Consider the overall purpose of small signal analysis.

Question 2

True or False: V_out can become positive if I_C is negative.

True
False

💡 Hint: Think about how current flows in the circuit.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a CE amplifier with R_C = 2kΩ, beta = 120, and I_B = 20µA, calculate the maximum possible V_out.

💡 Hint: Remember to consider the direction of current flow for voltage polarity.

Challenge 2 Hard

Discuss how a change in temperature influences beta and subsequently the signal output in a real amplifier.

💡 Hint: Consider how `beta` affects both the input and output currents.

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Reference links

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