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2 cards from this section. Quick, good the night before a test.
What is the basic function of a common collector amplifier?
Remember its role in interfacing with high-resistance sources.
If Q1 has a current gain (β) of 100, what is the base current for an emitter current of 1 mA?
Use the formula relating emitter current and base current through β.
What is the primary purpose of the common collector stage in an amplifier?
Consider the input characteristics of high source resistance.
The input resistance of a CE amplifier is affected by which key factor?
Think about how amplifier configuration affects loading effects.
Given a circuit with R1 = 47 MΩ and β = 150, if the emitter current of Q1 is 1.2 mA, calculate the input resistance.
Consider how to combine resistance values properly.
In a CE configuration with a Darlington pair, calculate the input impedance and comment on the resulting bandwidth.
The trade-off is crucial in amplifier design decisions.
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