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2 cards from this section. Quick, good the night before a test.
Describe the structure of an NPN transistor.
Think about the arrangement and flow direction of charge carriers.
What does forward bias mean?
Consider the conditions necessary for current flow.
What configuration does an NPN transistor have?
Think about the order of layers.
In a PNP transistor, the emitter must be at a higher voltage relative to which other terminal?
Recall the biasing definitions.
A circuit uses an NPN transistor with a beta (β) of 50 and a base current (Ib) of 5 µA. Calculate the collector current (Ic) and the relations among emitter, base, and collector currents.
Remember, Ic = β * Ib and relate the currents together.
In a PNP transistor, if the emitter current (Ie) is measured at 3 mA and the base current (Ib) is 10 µA, determine the collector current (Ic) assuming β = 300.
Understand the relationship between currents in the transistor.
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