Big Project LED's
(4) 33 volt 100 watt LED's wired in series, with a 25 amp 800 PIV stud mounted rectifier for 127 vac operation. Dang I wish this would work, it would save me a lot of money. Or then it might make the ...
Forum Discussion
MEXICOWANDERER wrote:
OK, FIVE 100 watt plates? Hoping the watts area under curve would be small enough for the devices to take it. Dang, four power supplies are almost 200 dollars plus shipping. Way more costly than the plates.
The warehouse has 3 85 watt 4,500K CFL's and still looks like an undertaker's parlor.
Here's the heatsink I was thinking of...
http://www.allelectronics.com/make-a-store/item/HS-176/17.25-ALUMINUM-HEATSINK/1.html
4500K is part of the problem, I prefer warmer color of 3500K-4000K, or kind of closer to incadescent lighting.
So far I have as of yet not found any LEDs that have real good color rendition. LED manufacturers seem to really be all over the map on this. The 10W plate I got was supposed to be 3000K-3500K, well it looks a bit bit like the old fashion yellow "bug light" bulbs, extreme yellow cast.
So, what you get with LEDs for color quality is bug lite yellow (2500K) to bluish "white" (6500K).
By the way the CFLs I linked to are a "daylite" for color (5500K) and are designed for a good color rendition. Typically used for photo shoots, for myself they would be a bit on the cold side of the color spectrum..
I have several 85W CFLs which are 3500K that I really like.. Not to much yellow, not too much pink and definitely not BLUISH.
Believe it or not, fluorescent lighting still in many cases is more efficient (lumens per watt) and lower cost to buy and use. Especially if you factor in changing from metal halide or any other HID lights to fluorescents...
LEDs are improving but they still have a long way to go... If only they could get a better handle on the color temps..
