Preview of practice Output Impedance Calculation (47.3.6) - Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part A)
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Output Impedance Calculation

Practice - Output Impedance Calculation

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is output impedance?

💡 Hint: Think about what 'impedance' means in a circuit context.

Question 2 Easy

Name one small signal parameter.

💡 Hint: It’s related to the current flowing in the transistor.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the formula for calculating output impedance?

R_out = R_load + small signal parameters
Z_out = 1 / (g_m + g_o)
Z_out = R_load + R_bias

💡 Hint: Think about how output and small signal parameters relate.

Question 2

True or False: Lower output impedance is always better for amplifier performance.

True
False

💡 Hint: Consider what happens when the impedance is high.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a common collector amplifier with a collector current of 0.75 mA, calculate the output impedance if the small signal parameters g_m = 40 mS and r_o = 200 kΩ.

💡 Hint: Substitute the values carefully into the formula.

Challenge 2 Hard

Consider a scenario where a load resistance of 1kΩ is connected. If the output impedance calculated is 52Ω, what is the effect of this load on the output voltage?

💡 Hint: Think about voltage division principles and how impedance interacts.

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Reference links

Supplementary resources to enhance your learning experience.