Hi Robin,
What driver do u suggest for these boards? Heatsinks from heatsink usa will be way too spensive, and i doubt baking sheets will be enough if u crank em up. Any other ideas?
I have tested 2 of these boards at 75 watts each on a plain 18x24 .125 inch aluminum plate with a fan blowing across the back and it stayed cool to the touch. Like maybe 5° warmer than ambient. I will test again. I would've used thermal camera but it was bare aluminum.
These are designed to be ran in parallel.
So they fit
HLG 150H C1400 2-4 boards works well
HLG 240H C2100 . 3-5 boards works well
HLG 320H C 2800. 4-6 boards works well.
More or less can be added to any of these combos.
I'll check at the Home Depot for stock size aluminum plate the works right off the shelf and do a quick throw together in a couple days and show how easy these are to build with/cool.
So in general the cost of these boards for the efficiency is right in line with the best cobs just different form factor.
A very low profile design can be had here as well as even coverage for tents. If one is Iooking for ultimate efficiency these are the ticket. I've got a a production prototype built that pulls 165 watts at the wall that is amazingly bright for such low wattage. 2 of these in a 4x4 would be very good.
6 boards in a 4x4 with 2 240 drivers would be an amazingly good amount of light. I'm not sure I'd want more than this. I've tried higher light levels and saw no real gain.
These 561c top bin are 20-25% higher efficacy than 561b.........
