![]() Usually what happens with LEDs is that the manufacturer specifies the output at something like 1/3 I_max at 25 C junction temperature, which gives a grossly exaggerated estimate for Lm/W and then people who build devices using the LEDs simply take the figure as given and think that the LED will output so-and-so many Watts at full output, when in reality the output can easily be half of that. That’s why LEDs are very sensitive to high ambient temperatures, because even a very large heatsink can’t stop them from overheating. Posted in LED Hacks Tagged 1000W LED, 100W LED, led, Yikes Post navigationĭespite a large heatsink, the thermal interface between the chip and the heatsink presents a bottleneck, and causes the temperature inside to rise significantly when the power is turned on. ![]() We have covered a few more practical builds using similar LEDs, but this thing does have a certain outrageous charm, and could be useful for high-speed video, where the more light, the better. We wonder what would happen if all the beams were focused on one point? As long as you don’t cross the streams… This effectively focuses the beam on a properly distributed area. If you really want to light something up it does a great job (for a short period of time) due in part to the inclusion of a glass lens for each of the LEDs. It is big, heavy and is visible for miles. It’s very impressive, but this thing isn’t particularly practical as a handheld. ![]() We’re not surprised: LEDs are more efficient than most other devices at converting electrical energy to light, but some always gets lost as heat.Ĭheck out the video after the break. He says he gets about 8 minutes of light out of this thing, and that the heatsink gets warm after a minute or two of use. Each of the LEDs is connected to a sizable voltage converter and a very large heatsink that holds all of them in place. built this monstrosity using ten 100-Watt LEDs, running off two RC car batteries. That’s a lot: the best pocket LED flashlights output about 700 lumens. ![]() It may be better to light a single candle than to curse the darkness, but that was before came up with this: a 1000W LED flashlight that outputs about 90,000 lumens of light. ![]()
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