Or you can always get some heatsinks bar from TME like https://www.tme.eu/fr/details/rad-a5724_500/radiateurs/stonecold/ but I wouldn't be so confident as to be a serious passiv unit so I would recommend using a fan over the top of this kind of bar just to make sure the temp doesn't go out of contr...

I got my COB and driver from Arrow But couldn't find any cheap suppliers for those passive pre-drilled heatsinks (to europe). So might buy total package from KingBrite next time. I got my order from kingbrite in 3 days, CHINA to EU! Great! Give a look at the thread about where to order, you can find...

So when you dim your lights, your fans will spin down too - is that what you want? That was the idea. But don't think I'll connect them in that way. But now just hypothetical: What if i connect them in that way? The heatsinks w/ fans are designed to remove up to 90W of heat.¹ The COB, running at 50...

So I downloaded an circuit simulator and tried to schematize my thoughts. If I add an resistor 240Ω in serie with the 4 fans I can reduce the amps through the fans to 0.25A. Don't know if this works but it looks nice. I've added the other circuit for the other 2 fans separate at the top. Couldn't ad...

I'm sorry man because I won't have no advice to tell you on how to wire the fans directly on your led driver because I did my light too and used arctic 64plus but i use meanwell apv 12 -xx in order to power my fans I wasn't too comfortable in the idea of using an old 12V charger sounded too unsecur...

I'm building my DIY COB LED. With: 4x BXRC-35E10K0-B-73-SE (50V) 1x MW ELG-240-C1050 (239.4W, 114-228V, 1,05A) 4x Alpine 64 Plus heatsink + fan (12V 0.25A). 2x Arctic F8 fans (12V 0.24A) for a breeze over the grow area. Now I want to wire the fans to the ELG driver but I don't know how (easy/cheap)....

Im in europe. No shipping or taxes to pay ontop with me in the uk. rest of europe is 20 for shipping. ;) I guess you're lucky, for shipping to NL KingBrite charge like $80 (price depends on the heatsinks). Then an extra 3,8% as paypal payment fee and in NL you pay 21% VAT over total order + shippin...

Seeing you paid in AUD maybe www.cutter.com.au is an interesting site.

So I did some research myself. Found out that the passive heatsinks from Kingbrite / Alibaba are pretty expensive. costs are $10 for the Ø133mm to 15$ for the Ø163mm but shipping to Europe (NL) cost at least $70. Combined with the customs/VAT comes for me, for 4 heatsinks: 4 heatsinks: $40/60 Shippi...

For my grow space #60cm (2'x2') I'm planning on making a DIY LED with 4 COB's. Running each at 50W for a total of 200W. Because of the 200W, I'm thinking about the HLG-185H-C1400 (200,2W, 71V ~ 143V) Now I'd like to get the most bang for my buck and a 3500K, 80CRI COB and came to the BXRC-35E10K0-D-...