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2 cards from this section. Quick, good the night before a test.
Define transconductance and provide its formula.
Think about how output current responds to variations in input voltage.
What is the role of early voltage in a transistor?
Consider how transistors behave at different collector voltages.
What is the formula for transconductance?
Refer to how input voltage influences output current.
True or False: A higher output resistance in an amplifier typically increases the gain.
Think about the formula where gain is the product of transconductance and output resistance.
Given a circuit with transistor Q1 having a transconductance of 15 mS and an output resistance of 20 kΩ, calculate the voltage gain. Then analyze how this would change if the load capacitance increased.
Draw the small-signal model to visualize changes in the circuit.
Consider an amplifier where the early voltage is given as 100V, and the collector current is set to 2 mA. Calculate the increased output resistance and its effects on amplification when adjusting the collector-emitter voltage.
Relate increased resistance to the operational limits of gain.
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