[I]@CaravanShaka wrote:[/I][quote="Here is what I think may be a good option for you. go with the 72"x1" heatsink said:If I do this I will probably do the Cree's. And go with with the plan you outlined above. How do I waterproof the LEDs though?
This may be on hold for right now though, just payed a dedcutable, plus some extra work, from my house being flooded from the tiolet and then last night I woke up to an 85 degree house, so who knows how much the A/C will cost. The house is just going on 8 years old too."]
Ouch, that doesn't sound fun
Hope you get your house cooled off soon!
As far as waterproofing, you could do an acrylic shield bolted to the heatsink using stand-offs, but that is a long thin piece of acrylic that may not be easy to find (might contact Marc, he may have a scrap that size).
If I do this I will probably do the Cree's. And go with with the plan you outlined above. How do I waterproof the LEDs though? said:
I just need to know how many leds I can put on that mean well dimmable driver said:I know about enough about electronics to know which end of the soldering iron to grab (usually; I'm sure the proper answer is a lot more detailed and nuanced than this, but...
As I understand it, the theory is that you need to look at the data sheet and see what the forward voltage of the LED is at the current level you want to run; for example, a Cree XP/E RB is 3.5v at 1000ma. The sum of the forward voltages of the string needs to be less than the voltage rating of the driver -- for that example, 13 of them would be 45.5v, and 14 would be 49v, or one volt over the rating of an ELN-60-48D.
In practice, I've been given to understand that some individual LEDs draw slightly more or less, and that it can vary with the operating temperature, so I've always decided to stick with 12 on mine to just to keep it simple, but I'm not sure how much it matters or what happens if you go slightly over.