ttystikk
Well-Known Member
It's an addiction. I'd warn you off but i fear it's already too late.
Matching Drivers and COBs
- Thread starter SupraSPL
- Start date
Bob John Smith
Member
Hi
Can you guys just confirm if the Meanwell HLG-185H-C1050 will power 4 x CLU048-1818C4-303M2K1 okay?
Thanks
Can you guys just confirm if the Meanwell HLG-185H-C1050 will power 4 x CLU048-1818C4-303M2K1 okay?
Thanks
bassman999
Well-Known Member
That driver is rated to 190VDC on output, and the cobs are rated 47.8V each on the low end but not sure at what current that is.
The output protection on driver says over 210VDC and up.
Hopefully someone else will know for sure
sunny747
Well-Known Member
Not sure if you saw this build... He does it for a little less $, but uses Citizens,,.. Hopefully this helps,
I ordered 4 cobs
and the HLG-185H-C1400A. Now we just have to wait
ttystikk
Well-Known Member
I know what you're getting.I ordered 4 cobs
And it's awesome!
wayward1
Member
If I run 2 clu048 1212 90cri on a hlg 185h c1400 it will run very close to the fv of 71-143 of the driver. What I'm not sure is whether I'll still be able to dim the lights. I want this driver so I can add 2 more cobs in the future but if I can't dim with just the 2 cobs ill have to find another driver.
fearnoevil
Well-Known Member
Hey guys, well I've been buried under work and personal crap for the past couple of months, so aside from tending to my current project, I haven't had time to follow up on my COB light build, other than getting all the piping, pumps and aluminum tubes rounded up for the water-cooled light bars.
The proto-type has been up and running for about 2 months without problems, so now I'm going to build the other 5 for the grow room which is approx 9' x 11'. Each bar is a 2" x 4" x 4' long rectangular aluminum tube.
But I still don't have a handle on how to choose the right COB and driver, it seems the more videos I watch and data sheets I read, the more in the weeds I get, which really pisses me off cuz for some reason I seem to have a mental block, it's like trying to learn Mandarin Chinese reading fortune cookies, lol. There just seem to be TOOOOO many choices/variables, like when I'm looking at Digikey's catalog, I just end up frozen with indecision, afraid I'm not able to pick the best combination. I think it's probably related to OCD, lol.
So I'd sure appreciate some advice to help deciding what the best option, or close to it, would be if I'm building 6 - 4' lights to fill that 9' x 11' area and aiming for 800ppfd. Efficiency is important but it's not as much a concern as budget, which for the 5 remaining lights my is about $1000. And that's just for the COB's and drivers, I've got everything else covered.
I'm wide open to suggestions and any help is appreciated as this has been giving me a huge headache trying to reach a decision.
The proto-type has been up and running for about 2 months without problems, so now I'm going to build the other 5 for the grow room which is approx 9' x 11'. Each bar is a 2" x 4" x 4' long rectangular aluminum tube.
But I still don't have a handle on how to choose the right COB and driver, it seems the more videos I watch and data sheets I read, the more in the weeds I get, which really pisses me off cuz for some reason I seem to have a mental block, it's like trying to learn Mandarin Chinese reading fortune cookies, lol. There just seem to be TOOOOO many choices/variables, like when I'm looking at Digikey's catalog, I just end up frozen with indecision, afraid I'm not able to pick the best combination. I think it's probably related to OCD, lol.
So I'd sure appreciate some advice to help deciding what the best option, or close to it, would be if I'm building 6 - 4' lights to fill that 9' x 11' area and aiming for 800ppfd. Efficiency is important but it's not as much a concern as budget, which for the 5 remaining lights my is about $1000. And that's just for the COB's and drivers, I've got everything else covered.
I'm wide open to suggestions and any help is appreciated as this has been giving me a huge headache trying to reach a decision.
qballizhere
Well-Known Member
The cobs and drivers will be more than $1000 I would suggest to use citizen 1818 or Luminus cxm 22 you can get the cobs about $20 each. 8 cobs per 4x4 and then to drive them I suggest elg-150-54-d2 2 cobs per driver so you would be running them at 1.4a. Unless you want to dim each light individually that driver has built in dimming software. Then heat sinks there are several choices, holders and reflectors if you want them.
fearnoevil
Well-Known Member
Thanks Qballizhere, but I think you may have misread my post, or maybe I'm not clear on what you're suggesting. The light bars are just a 4' long rectangular sealed tube with water inlet/outlets for water cooling. So if I get your drift you mean 8 COBs for a 4' x 4' area, or is it 8 COBs all on the 4' strip (which seems a bit high, or is that necessary to hit 800ppfd?).
And don't need heat sinks or fans, just gonna hook this up to a Grundfos circulator pump, a radiator and reservoir. Here's a couple of pics
of the light:
qballizhere
Well-Known Member
Ok i am with you 8 cobs per 4x4 here is the cree info on what I suggested
Citizen.1818C4.3000K 8 COBS @1.4A ON 5.88 PROFILE HEATSINK
16 SQ.FT. CANOPY 93% EFFICIENT DRIVER @10 CENTS PER KWH
Total power watts at the wall: 625.81
Cobs power watts: 582
Total voltage forward: 416
Total lumens: 86718
Total PAR watts assuming 10% loss: 238
Total PPF: 1156.68
PPFD based on canopy area: 778.15
PAR watts per sq.ft.: 14.88
Cob efficiency: 45.48%
Power watts per sq.ft.: 36.38
Voltage forward per cob: 52.0
Lumens per watt: 149.0
Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
Heatsink area per inch: 260.01 cm^2
Total heat watts: 317
umol/s/W / CRI: 4.86 / 80CRI
Heatsink length passive cooling @120cm^2/heatwatt: 146 inches
Heatsink length active cooling @40cm^2/heatwatt: 49 inches
COB cost dollar per PAR watt: $1.08
Electric cost @12/12 in 30 days: $23.03
Electric cost @18/6 in 30 days: $34.29
Cost per cob: $32.08
Heatsink cost per inch cut: $1.74
Total cobs cost: $257
Total heatsink passive cooling cost: $254
Total heatsink active cooling cost: $85
fearnoevil
Well-Known Member
Also, what do you think about mixing 4000K and 2700K to get a broader spectrum? My original plan is to put 6 COBs per bar with 3 of each per bar. Also, which model of Citi 1818? There's quite a few to choose from on Digikey, but thinking going with the higher lumen per watt?
fearnoevil
Well-Known Member
Ah, just saw your post, I'll read through it and see where that puts me budgetwise, thanks again ;?)
bassman999
Well-Known Member
Should still dim with have the potential voltage of the driver utilized.
qballizhere
Well-Known Member
If you want to do 6 per 4x4 you can bump up the power to 2.1a here is the numbers for that
Citizen.1818C4.3000K 6 COBS @2.1A ON 5.88 PROFILE HEATSINK
16 SQ.FT. CANOPY 93% EFFICIENT DRIVER @10 CENTS PER KWH
Total power watts at the wall: 731.18
Cobs power watts: 680
Total voltage forward: 324
Total lumens: 93840
Total PAR watts assuming 10% loss: 258
Total PPF: 1253.88
PPFD based on canopy area: 843.54
PAR watts per sq.ft.: 16.13
Cob efficiency: 42.14%
Power watts per sq.ft.: 42.5
Voltage forward per cob: 54.0
Lumens per watt: 138.0
Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
Heatsink area per inch: 260.01 cm^2
Total heat watts: 393
umol/s/W / CRI: 4.86 / 80CRI
Heatsink length passive cooling @120cm^2/heatwatt: 181 inches
Heatsink length active cooling @40cm^2/heatwatt: 60 inches
COB cost dollar per PAR watt: $0.75
Electric cost @12/12 in 30 days: $26.82
Electric cost @18/6 in 30 days: $39.98
Cost per cob: $32.08
Heatsink cost per inch cut: $1.74
Total cobs cost: $192
Total heatsink passive cooling cost: $315
Total heatsink active cooling cost: $104
As afar as where to get them I would go to cobkits and there is jerry on alibaba also cdi if you want to wait 6 or 8 weeks. If you went with the 1812
northern grow lights has them here is the 1812
Citizen.1812C4.3000K 8 COBS @1.4A ON 5.88 PROFILE HEATSINK
16 SQ.FT. CANOPY 93% EFFICIENT DRIVER @10 CENTS PER KWH
Total power watts at the wall: 651.61
Cobs power watts: 606
Total voltage forward: 433
Total lumens: 86052
Total PAR watts assuming 10% loss: 236
Total PPF: 1146.96
PPFD based on canopy area: 771.61
PAR watts per sq.ft.: 14.75
Cob efficiency: 43.33%
Power watts per sq.ft.: 37.88
Voltage forward per cob: 54.1
Lumens per watt: 142.0
Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
Heatsink area per inch: 260.01 cm^2
Total heat watts: 343
umol/s/W / CRI: 4.86 / 80CRI
Heatsink length passive cooling @120cm^2/heatwatt: 158 inches
Heatsink length active cooling @40cm^2/heatwatt: 53 inches
COB cost dollar per PAR watt: $0.78
Electric cost @12/12 in 30 days: $23.96
Electric cost @18/6 in 30 days: $35.69
Cost per cob: $22.93
Heatsink cost per inch cut: $1.74
Total cobs cost: $183
Total heatsink passive cooling cost: $275
Total heatsink active cooling cost: $92
fearnoevil
Well-Known Member
So for the 5 fixtures I had figured on using another 30 COB's, 6 each per 4' bar, and 5 drivers. I've never dealt with Jerry before, but are his prices lower (think I read somewhere that they were, dk). And yeah, I'd rather not wait too long, so one reason I was looking at Digikey is that they're not too far from my local. I really wanted to work on these over the Christmas holiday, but like I mentioned earlier, just couldn't find the right combination and pull the trigger, lol. So that might mean paying for expedited shipping, but will be worth it.
And thanks again for that information, that's just what I needed man.
fearnoevil
Well-Known Member
I have a question regarding dealing with Kingbrite. I'm dealing with one of Jerry's minions, her name is Vivi, and she saysin order to complete my transaction (for Citizen COBs) I can't use the Alibaba site because:
"Order from alibaba is not available, because 'CITIZENl' is not allowed to make custom clearance. payment by paypal is safe."
IOW, I guess they want a Paypal payment but NOT using the Alibaba site, which I would think then negates any protection that site offers. I've never actually made any purchases through Alibaba before, does this sound right?
"Order from alibaba is not available, because 'CITIZENl' is not allowed to make custom clearance. payment by paypal is safe."
IOW, I guess they want a Paypal payment but NOT using the Alibaba site, which I would think then negates any protection that site offers. I've never actually made any purchases through Alibaba before, does this sound right?
bassman999
Well-Known Member
If I remember right Jerry sent me an email requesting payment via paypal.
I had no issues with the order and didnt have to pay any import taxes or duties in the US.
Gromax 3590B
Active Member
The same for me. An email with a link to Paypal. The stuff arrived and no tax pay.
CoB_nUt
Well-Known Member
Same here.