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3 cards from this section. Quick, good the night before a test.
Describe the three regions of a BJT.
Think about the structure of the BJT.
What does it mean for a junction to be forward biased?
Consider how voltage affects current flow.
What should the biasing condition be for junction-1 in a BJT?
Think about how current flows through a junction.
True or False: In a reverse-biased BJT, there is no current flow at all.
Consider from the perspective of thermal energy and minority carrier dynamics.
Given a BJT with a forward voltage of 0.7V and a reverse saturation current of 1μA, calculate the current flowing through the base-emitter junction.
Use the exponential relation to calculate.
If the doping concentrations of the emitter, base, and collector are 10^20 cm^-3, 10^15 cm^-3, and 10^18 cm^-3 respectively, analyze how these concentrations will affect current flow in different bias conditions.
Think critically about how carrier concentration affects mobility.
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