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I just replaced three flat ceiling mounted LED lights that I would have expected to last much longer than they did. The crappy power adapter they come with was
by eip 10y ago
I just replaced three flat ceiling mounted LED lights that I would have expected to last much longer than they did. The crappy power adapter they come with was putting out 5v more than it is supposed to. It was consistent on all the lights so I assume it was done on purpose to burn them out. There is probably money to be made selling adapters that output the correct voltage.
- cwillu 10y agoTwo things: if you weren't measuring the output voltage under load, then you weren't measuring anything terribly useful. Second: LED's are typically constant current devices. If they don't receive a _minimum_ voltage, they just won't light up at all, but if they do, and the current is regulated properly, then the exact voltage doesn't matter (or rather, is a function of the LED's demand, not the supply).