Practice Small Signal Parameters (19.1.7) - Linearization of non - linear circuit containing BJT (Contd.)

Practice: Small Signal Parameters

Lesson 19.1.7Linearization of non - linear circuit containing BJT (Contd.)

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9 questions

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6 sample questions

Question 1.
Define transconductance.
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Think about the relationship between current and voltage in a transistor.
Question 2.
What does the symbol r_π represent?
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Consider what resistance looks into the base-emitter junction.
3Question 3.
What does transconductance refer to?
- Change in collector current per change in base current
- Change in collector current per change in base-emitter voltage
- Input resistance of the transistor
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Think about how transistors amplify voltage changes.
4Question 4.
True or False: The output conductance is inversely related to output resistance.
- True
- False
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Consider their definitions.
Question 5.
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 V_BE.
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Use the transconductance formula to find the change.
Question 6.
Analyze how varying the base-emitter voltage affects the current gain of a BJT amplifier. Explain how the operating point affects your analysis.
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Consider how the gain relates to voltage changes.

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