47.3.6 - Output Impedance Calculation
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Practice Questions
Test your understanding with targeted questions
What is output impedance?
💡 Hint: Think about what 'impedance' means in a circuit context.
Name one small signal parameter.
💡 Hint: It’s related to the current flowing in the transistor.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating output impedance?
💡 Hint: Think about how output and small signal parameters relate.
True or False: Lower output impedance is always better for amplifier performance.
💡 Hint: Consider what happens when the impedance is high.
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Challenge Problems
Push your limits with advanced challenges
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.
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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