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2 cards from this section. Quick, good the night before a test.
Define forward bias in a semiconductor diode.
Think about what happens when a battery is connected to a diode.
What is the effect of forward bias on the depletion region?
Visualize how the barrier potential changes.
What happens when a diode is forward biased?
Remember how the ends of the diode are connected to the battery.
True or False: In forward bias, the barrier potential prevents current flow.
Consider what forward bias does to the barrier.
Describe the current-voltage characteristic of a p-n junction diode under forward bias and derive the mathematical expression relating current to applied voltage.
Look at exponential functions and how they grow.
A silicon diode has a forward voltage of 0.7V when conducting. What is the expected current flow if I0 = 1μA?
Consider what the exponential growth implies for small changes in voltage.
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