I keep getting “Forward & reverse bias” questions wrong in Semiconductor Electronics (Diodes). What's the trap?
thinking a diode conducts equally both ways.
The usual trap: thinking a diode conducts equally both ways. How to avoid it: a diode is a one-way valve for current — forward on, reverse off. Go back to the definition — forward bias (p to +, n to −) lowers the junction barrier and lets current flow; reverse bias widens the depletion region and blocks it.
Key point
Forward & reverse bias
Common mistake
thinking a diode conducts equally both ways.
Memory tip
a diode is a one-way valve for current — forward on, reverse off.
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