19.3.2 - Discussion on Small Signal Model
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Practice Questions
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What does the Q-point represent in a BJT circuit?
💡 Hint: Consider what operating point means in the context of circuits.
Define transconductance (gm).
💡 Hint: Think about the relationship between input voltage and output current.
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Interactive Quizzes
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What is the purpose of the small signal model?
💡 Hint: Think about what simplifications are needed for circuit analysis.
True or False: The Q-point changes dynamically with signal processing.
💡 Hint: Consider if the biasing affects signal processing.
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Challenge Problems
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Given a BJT with a collector current (Ic) of 1 mA and Early voltage (VA) of 50V, calculate the output conductance (go).
💡 Hint: Be sure to use the correct units in your calculation.
A BJT has a transconductance of 5 mA/V and is connected to a load of 2 kΩ. What is the expected voltage gain?
💡 Hint: Remember the relationship for voltage gain calculation.
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