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4 cards from this section. Quick, good the night before a test.
What does the small signal equivalent circuit aim to achieve?
Consider the linearization of circuit behavior.
Define transconductance in your own words.
Think about current versus voltage relationships.
What does transconductance measure?
Focus on the relationship between current and voltage.
Is the output conductance of a BJT a measure of how collector current changes with collector-emitter voltage?
Think about how voltage affects current.
Consider a BJT amplifier with a transconductance of 1.5mS and a base-emitter resistance of 200Ω. If the input signal is a sinusoidal voltage of 20mV, calculate the output voltage swing when coupled with a load resistance of 1kΩ.
Use the formula for finding output voltage in small signal analysis.
Given a BJT operates with a small signal current gain of 150 at a certain operating point. If the base current is 10μA, what will be the collector current? How will this value change if the operating point shifts causing β to drop to 120?
Recall the relationship between Ic and Ib through β.
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