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← TechnologyWhich risk increases when exceeding the PIV rating in rectifier circuits using multiple diodes?
A)Reverse bias avalanche breakdown✓
B)Forward current thermal runaway
C)Increased forward voltage drop
D)Reduced switching transient voltage
💡 Explanation
Reverse bias avalanche breakdown increases because exceeding the Peak Inverse Voltage (PIV) applies excessive electric field, causing impact ionization within the depletion region of the diode, therefore enabling a large reverse current rather than blocking voltage as intended.
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