8.2.3 - Terminal current of the BJT in active region
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Practice Questions
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Explain what happens at the base-emitter junction during forward bias.
💡 Hint: Think about the direction of current flow.
What is the primary role of the collector current?
💡 Hint: Relate it to the amplification function of the BJT.
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Interactive Quizzes
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What is the effect of forward bias on the base-emitter junction?
💡 Hint: Think about the way voltage affects current in a circuit.
True or False: The collector current is always less than the base current.
💡 Hint: Recall the relationship between collector and emitter currents.
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Challenge Problems
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A BJT has a base width of 0.7μm and the emitter doping concentration is 10^20cm^(-3). Calculate the theoretical maximum value of β if the base doping is 10^15cm^(-3).
💡 Hint: Examine the ratios and dependencies in the provided equations.
In a practical circuit, a transistor's collector current is measured as 2mA, with a base current of 20µA. Calculate the β and explain what it signifies for the transistor's performance.
💡 Hint: Substitute values correctly to derive β.
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