Thank you for replying to my question. But i already have everything ready except for these rare wago conductor connector and waterproof powersupply since im in the philippines and i dont have any access to passive heatsinks other than online market and im running out of budgetThat's 65w per COB and should work. You can measure the heatsink temps after a few hours to see where they stabilize. Maybe runnuing the fans at only 9 or 6 volts is already enough, these cheap fans are a bit noisy at 12v.
But such a small heatsink is not fail safe. If the fan fails, they will quickly overheat. You should switch to a HLG-240H-36A, and wire the COB's in parallel and add a thermal switch to each heatsink (simple bimetal switch, "NO" means "normal open", 90°C off). If one fan fails and the radiator temperature exceeds 90°C, it will be switched off and the others will continue to run. With a series connection that is not feasible!
You can still use a series circuit, but if one fan fails and the corresponding COB fails too the whole light will be switched off and you need to locate the faulty one, which is far easier with a parallel setup.
Why not use passive 120 or 130mm Ø pin fin heatsinks? Yes, they cost a lot more, but they cool passively. No additional power consumption, no wiring and they are fail-safe! With such a heatsink/fan combo I guarantee you the first failure within the first year. Parallel wiring is also much safer for you, as it uses only 36v, which is also in the worst case not fatal.
i still havent assembled it because i cant seem to find these wago conductor connector in my area. what can u suggest as an alternative?Hell Ya. 4 cxb cobs on the 240-1750. Classic.
Lol anything. Wire nuts? Soldering and heat shrink, or you can go to your hardware store and by Ideal connectors.i still havent assembled it because i cant seem to find these wago conductor connector in my area. what can u suggest as an alternative?
Would be more like 37 watts of heat for a gen 7 vero 29 but i really doubt you will be able to mount a vero29 on a I70 cooler unless you use a thermal adhesive which I don't recommend. So much better off drilling and taping holes so you can remove the chip and replace the thermal paste every 5 to 10 years or so depending on the quality of thermal paste used. I would find a heatsink big enough to let you drill and tap holes so the vero 29 is removable.Hi guys!
I'm planning to use one I70 cooler (Coolermaster) per vero29 working at aprox 75w (i'm using 50 heat watts for design).
Coolermaster's site says that this cooler has 95W TDP. So I concluded it'd fit. Is this the right way of think?
Besides that, how do I know if this cooler matches with veros' dimensions? Does the square base area of passive heatsink have necessarily be higher than the cob area?
Thanks since now!
Thank you, man! It's a very useful info.Would be more like 37 watts of heat for a gen 7 vero 29 but i really doubt you will be able to mount a vero29 on a I70 cooler unless you use a thermal adhesive which I don't recommend. So much better off drilling and taping holes so you can remove the chip and replace the thermal paste every 5 to 10 years or so depending on the quality of thermal paste used. I would find a heatsink big enough to let you drill and tap holes so the vero 29 is removable.
A cpu would be putting out 95 watts of heat unlike a COB like a vero29 gen 7 would be putting out over 50% light and 50% heat ( if it was 50% efficient @ 95 watts) . So if you ran it at 95 watts it would need 47.5 watts of heatsink cooling. So that heatsink could handle more wattage Just not a good way to secure the cobs. Personally i would go with something like these 134mm heat sinks that are passive so no fans to worry about https://led.cdiweb.com/Products/Detail/MODULEDMEGA134100BHBG-MechaTronix/574067/Thank you, man! It's a very useful info.
Just to get sure: the method is an simply comparison between cooler's TDP and cobs heat watts, considering the contact area. Was I right thinking this?
And btw, do you have any cooler suggestion for me?
Nice! I've spent a quite time searching about passive HS. My problem is that I live in Brazil and the market of passive HS here is shameful. My only manner to get those would be importing from US or another country, which would be very expensive. =(A cpu would be putting out 95 watts of heat unlike a COB like a vero29 gen 7 would be putting out over 50% light and 50% heat ( if it was 50% efficient @ 95 watts) . So if you ran it at 95 watts it would need 47.5 watts of heatsink cooling. So that heatsink could handle more wattage Just not a good way to secure the cobs. Personally i would go with something like these 134mm heat sinks that are passive so no fans to worry about https://led.cdiweb.com/Products/Detail/MODULEDMEGA134100BHBG-MechaTronix/574067/
Yeah lots of people using the Alpines never heard any complaints and they are fairly cheap. You can drill and tap them too so that a big plus. I would imagine you will have to replace the fans at least once during the lifetime of the vero 29 a flowering only light can last 20 years or longer.Nice! I've spent a quite time searching about passive HS. My problem is that I live in Brazil and the market of passive HS here is shameful. My only manner to get those would be importing from US or another country, which would be very expensive. =(
I've just looked some guys talking about Alpine 11 cooler. I think it's probably cause its base is apparently big (squared with no gaps). Do you think it's a smart choice for my case?
Thank you again, you are being very helpful.
They are not passive but they work really well with my cxb 3590 @36v they even could handle 72vNice! I've spent a quite time searching about passive HS. My problem is that I live in Brazil and the market of passive HS here is shameful. My only manner to get those would be importing from US or another country, which would be very expensive. =(
I've just looked some guys talking about Alpine 11 cooler. I think it's probably cause its base is apparently big (squared with no gaps). Do you think it's a smart choice for my case?
Thank you again, you are being very helpful.
Thanks!They are not passive but they work really well with my cxb 3590 @36v they even could handle 72v
I thought that arctic alpine 11 had a raised portion in the center of it. Is yours flat completely?View attachment 4229179
I wipe the grey square when i clean it with iso and i put a thermal pad under the cob
My bad mine is a 64 plus cost was around 25$ cad per unitI thought that arctic alpine 11 had a raised portion in the center of it. Is yours flat completely?
Can I ignore this portion and mount like @madininagyal ?I thought that arctic alpine 11 had a raised portion in the center of it. Is yours flat completely?
Arctic Alpine 64Plus and a few others are ththe only ones that'll work.Can I ignore this portion and mount like @madininagyal ?