Remote Living > Lighting
LEDs overheating
Mary B:
Thermal adhesive pads. Otherwise I would have needed to tape micro holes in copper... and I hate tapping copper.
--- Quote from: Bruce S on March 22, 2016, 09:00:28 AM ---Mary B
Is correct! I'm not using anything as high-powered as hers, but even down in the 1 watt area cooling is necessary.
Using lesson from GHURD, Commanda & Rich Hagen, I've been toying with lowering the current. Since there is a point where the light amount is just noticeable I have lowered the current to 75% of max . Cooling is still necessary but not as much. 66% seems to my eyes the lowest before I really notice.
Mary B? is that standard chip paste your using? OF did you go with the newer high-temp stuff?
Cheers
Bruce S
--- End quote ---
Mary B:
I also back down the current until the light just dims, typically about 75% of rated on these big modules. The difference in light output is slight and they run a lot cooler. But with 14 watts of LED on one heatsink I have to use a fan to keep things cooler.
phil b:
I'm getting 'file not found on this server' on Commanda's LED installments here;
Part 1
http://fieldlines.com/index.php/topic,131213.0.html
Part 2
http://www.fieldlines.com/index.php/topic,131214.html
Part 3
http://www.fieldlines.com/index.php/topic,131215.html
Part 4
http://fieldlines.com/index.php/topic,131296.0.html
For convenience sake, I merely modified your links.
They all work now :)
Simen:
Didn't someone say 'Remove the "board" word' in the address, and it works?
I tried it for the first one, and it did. :)
Mary B:
with the price of a constant current LED supply down under $10 in a lot of cases building a circuit doesn't make economic sense unless you already have the parts in your junk box. http://www.ledsupply.com/dc-input-constant-current-led-drivers
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