I have a question for all you clever people. Could I run an XP-E red at about ~700mA just suspended on the two wires for pos and neg?
I wouldn’t have thought it would be too hot at those currents. What do you think?
Thanks in advanced.
I have a question for all you clever people. Could I run an XP-E red at about ~700mA just suspended on the two wires for pos and neg?
I wouldn’t have thought it would be too hot at those currents. What do you think?
Thanks in advanced.
yes it will be hot, what do you mean suspended on 2 wires? as in no heatsink at all?? than no, unless you want to cook it within minutes.
not to mention color leds especially reds are more sensitive to heat, than white, just check out temp\lm curve in datasheet.
I was just going to use the wires to dissipate the heat. Wouldn’t be on for long periods of time.
What alpg88 said few people are aware of. Blue is least affected way less than even White, but one would be more careful about Blue than Red because it has higher vf.
This graph is for XP-E2 color from the official datasheets.
I ran this light which has an XPE-2 torch led at .8 amp last night for 55 minutes. I was surprised that the torch reached a peak temp of over 50C. That was the whole torch not just the head. It was stationary in a room with a temp of about 20c.
well if they are copper, 5mm in diameter, and a meter or two long, stripped of insulation, than may be.
find a old computer video card, some have heatsinks about 5x5cm with fins, and attach your led to it. most video cards heatsinks do not have fans, (unless high performance video card) and spacing on its fins is optimal for passive cooling.
Hmmmmmm dam this foils my plans then