51.2 - Next Example with Practical Source Resistance
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Practice Questions
Test your understanding with targeted questions
What is the voltage gain of a common base amplifier if the transconductance is 30 mS and the load resistance is 2kΩ?
💡 Hint: Multiply transconductance by resistance to get gain.
Define input impedance in the context of common base amplifiers.
💡 Hint: Think about how it affects the signal source.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is typically true about the input impedance of a common base amplifier?
💡 Hint: Think about signal interaction with the circuit.
True or False: The upper cutoff frequency depends on the device's source resistance.
💡 Hint: Remember how resistance affects signal clarity.
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Challenge Problems
Push your limits with advanced challenges
A common base amplifier must maintain a voltage gain of 150 with source resistance of 5kΩ. If the desired load resistance is 1kΩ, calculate the required transconductance.
💡 Hint: Adjusting R_C will be key to achieving the desired outcome.
How will increasing source resistance impact the upper cutoff frequency in a common base amplifier setup? Demonstrate with calculations.
💡 Hint: Track how different resistances affect your frequency response.
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