15.2.3 - Effect of Input Voltage on Collector Current
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Practice Questions
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What is V_BE in a BJT?
💡 Hint: Think about the threshold voltage needed for conduction.
What does collector current (I_C) signify?
💡 Hint: Consider its role in the transistor's functionality.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of V_BE in a BJT?
💡 Hint: Think about the role of a battery in a circuit.
As you increase the input voltage, what happens to the collector current?
💡 Hint: Consider the direct relationship between I_B and I_C.
2 more questions available
Challenge Problems
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Design a common emitter amplifier circuit that has a target current gain (β) of 150. If the input voltage is adjusted from 0.5V to 1.5V, calculate the expected change in collector current. Assume all other conditions remain constant.
💡 Hint: Analyze the input-output dynamics based on the assumed voltage characteristics.
You have a BJT with an unknown β, and you notice that the collector current is 10mA with a base current of 100µA. If you increase the base current to 200µA, what is the expected collector current change if the BJT is operated in active region?
💡 Hint: The proportionality relationship of base to collector current is key here.
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