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2 cards from this section. Quick, good the night before a test.
What is the primary function of the base current in a BJT?
Think about how the base current influences the transistor's action.
What does KCL state?
Consider current paths at junctions or nodes.
What is the primary role of a BJT in a circuit?
Consider how it influences signal strength.
True or False: KVL states that the sum of the voltages around any closed loop is zero.
Reflect on how voltage drop and sources relate in loops.
In a BJT amplifier with a common emitter configuration, if the base-emitter voltage, V_BE, is 0.7V and the saturation current, I_S, is 1 μA, compute the collector current, I_C. Consider thermal voltage, V_T, to be 26mV.
Use the exponential relationship defined for a BJT.
If a BJT is operated at a collector current of 100 mA and has a beta value of 50, how much base current is required? What happens if the beta drops to 25?
Focus on the formula relating the collector current, base current, and beta.
4 more questions in this section. Enroll free to practise them all.
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