19.1.7 - Small Signal Parameters
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Practice Questions
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Define transconductance.
💡 Hint: Think about the relationship between current and voltage in a transistor.
What does the symbol rπ represent?
💡 Hint: Consider what resistance looks into the base-emitter junction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does transconductance refer to?
💡 Hint: Think about how transistors amplify voltage changes.
True or False: The output conductance is inversely related to output resistance.
💡 Hint: Consider their definitions.
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Challenge Problems
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Given a BJT with a collector current of 4 mA and a transconductance of 1.5 mS, calculate the change in collector current for a change of 0.1 V in VBE.
💡 Hint: Use the transconductance formula to find the change.
Analyze how varying the base-emitter voltage affects the current gain of a BJT amplifier. Explain how the operating point affects your analysis.
💡 Hint: Consider how the gain relates to voltage changes.
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