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← TechnologyWhich consequence results when exceeding the forward current rating in an LED driver circuit controlling a high-power LED array?
A)Increased LED luminous efficacy occurs
B)Thermal runaway induces catastrophic failure✓
C)Color temperature shifts lower proportionally
D)Driver efficiency significantly improves itself
💡 Explanation
Exceeding forward current causes increased junction temperature because Joule (resistive) heating dominates, thereby triggering thermal runaway. This leads to rapid device degradation/failure rather than improved efficacy; LED matrices need specific current limiting to avoid thermal issues, rather than becoming efficient.
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