3 ms·
>My living room lighting already blew up two times and no The reason is not the LEDs themselves but... money. The LEDs are overdriven to show higher lumen numb
by xxs 5y ago
>My living room lighting already blew up two times and no
The reason is not the LEDs themselves but... money. The LEDs are overdriven to show higher lumen numbers (and wattage) on the box. That results in overheating both of the LEDs and the driving circuits - one of them fails. In short it's the good old - planned obsolescence.
It's absolutely possible to have LEDs that last for 50k hours (while losing 20% of their brightness) but don't fail. Sometimes even adjusting a resistor value (to reduce the current through the LEDs) would do the trick.
- HPsquared 5y agoThat could be an interesting hack to the power supply, turning down the power a bit. Not the kind of thing that gets people motivated though, "let's make this product less powerful" isn't a common modding activity.
- stordoff 5y agoBig Clive does this sort of thing on his YouTube channel fairly often. A few examples: * Adjusting a current regulator to drop a 10W lamp to ~2W - https://www.youtube.com/watch?v=YeWnHnZ-ojw https://www.youtube.com/watch?v=YeWnHnZ-ojw * Adjusting a capacitive dropper-based lamp from 5W to 0.5W - https://www.youtube.com/watch?v=RKRz7EplgDE https://www.youtube.com/watch?v=RKRz7EplgDE * Making a "Dooby" (inspired by the Philips Dubai lamps[1]) lamp - using a series capacitor to make various lamps run at 0.1-2W - https://www.youtube.com/watch?v=ISTB0ThzhOY https://www.youtube.com/watch?v=ISTB0ThzhOY [1] They're designed to have a higher energy efficiency and a longer operational life - https://www.youtube.com/watch?v=klaJqofCsu4 https://www.youtube.com/watch?v=klaJqofCsu4
- xxs 5y ago>let's make this product less powerful" isn't a common modding activity. Actually it is for 'consumer' LEDs products, like a top 1. Undervolting GPUs and laptop CPUs is rather common too.