Foxygreen Newbie, White Widow Fem x4, Soil, Tent, DIY COB

[foxygreen]

You should move it up its eventually going to fry your plants

I was wondering about that, I've been trying to keep around 4"....I am hoping to get my Cob set up tonight or tomorrow and then use this T5 for the younger one in a different cabinet

 

[foxygreen]

Working on placement of driver and 3 cobs attaching to frame

 

[Gree N]

Hey mate in response to your post on my diy cob thread, I would fix it too the underside of that fixture in-between two of the heatsinks. If you space out two more shorts pieces of angle so the heatsink sits in the centre of the existing bits of angle. That way it won't be lop-sided when you hang it and it will have good air-flow all around it.
The meanwell drivers don't get hot at all from my experience so far, although I have been using the elg series.

 

[foxygreen]

Thanks bunches I will post pics on my journal when done

 

[Gree N]

Looking at that drivers spec's and the clu048 (if it is the 1212 gen 5)
I don't think you will be able too run 3 cobs off that driver, you might even struggle too run two in series. That driver runs from 1.95-3.9 amps and the chips run at 1.08 too a max of 2.76. I would be careful when taking them past 1.08, do it slowly and monitor the heat, you don't want a fire in your grow room attracting unwanted attention lol
I'm not a pro now but I think the ELG-240-C1750A would suit those three a lot better you could run three or even four of those chips in series from 875ma-1750ma or even wanted to push them hard you could go with ELG-240-C2100A

 

[Gree N]

Looking at that drivers spec's and the clu048 (if it is the 1212 gen 5)
I don't think you will be able too run 3 cobs off that driver, you might even struggle too run two in series. That driver runs from 1.95-3.9 amps and the chips run at 1.08 too a max of 2.76. I would be careful when taking them past 1.08, do it slowly and monitor the heat, you don't want a fire in your grow room attracting unwanted attention lol
I'm not a pro now but I think the ELG-240-C1750A would suit those three a lot better you could run three or even four of those chips in series from 875ma-1750ma or even wanted to push them hard you could go with ELG-240-C2100A

Sorry I just read your earlier post's they are the clu048 1818 chips. Looks like they can get pretty bright might need some shades for the growroom haha.
So they run 1.6amp too 4.1 amp so you should be safe with no fires
They draw 47.8-56.2V so I think you can only run one chip per driver. I've got 0 experience with those drivers so again just assuming from the spec sheets.

 

[foxygreen]

Citizen COBs are one of the most economical choice for DIYers. The CLU-1818 series offers unmatched performance for its price.

CLU-1818 is a nominal 50V COB which can operate up to 4.14A max (approximately 250W). Best efficiency is seen below 150W with this chip. This chip offers similar efficiency to a CXB3590 of the same color temperature n the 60-90W range. The 1818 is typically more efficient above 90W, with the CXB3590 being more efficient below 60W

 

[foxygreen]

Sorry I just read your earlier post's they are the clu048 1818 chips. Looks like they can get pretty bright might need some shades for the growroom haha.
So they run 1.6amp too 4.1 amp so you should be safe with no fires .
They draw 47.8-56.2V so I think you can only run one chip per driver. I've got 0 experience with those drivers so again just assuming from the spec sheets.

Thanks gree I will learn with you I hope...I plan to move this array into 6x6 room along with another cob array.

 

[foxygreen]

Heres specs on driver copied off Cobkits site

Constant voltage/ constant current “A” version of 48V driver is voltage and current adjustable for maximum utility with CLU048-1818 and CLU058-1825.

HLG-185H-SPEC

Also works with 36V COBs like CLU048-1212 or CXB3590 at reduced total power output (approximately 150W) while allowing an upgrade path to 50V cobs later on. For maximum current the -36A drivers are a better fit for 36V cobs

Constant voltage/ constant current “A” version drivers offer the following advantages:

lower maximum voltage for safer operation
maximum flexibility for expansion – any number of COBs can be added later on. Every COB added increase efficiency of entire array


Note that dimming for “A” versions are via the potentiometer fixed to the unit- they do not offer remote dimming. Drivers are dimmable to approximately 20% of total load

Also please note all COBS must be same series of similar voltage profile, you cant mix 1212 and 1818 as the lower voltage cob will not light



Max current: 4.25A can power the following combination of COBs:

Citizen:

3 1212@ 52.3W each (157W max), 4@38W ea (152W max) , 5@ 29.8W ea (149W), or 6@ 24.6W ea (148W), etc.
3 1818@ 75.3W each (226W max) or 4@ 55W ea (220W max), 5@ 43.4W ea (217W), or 6@ 35.9W ea (215W), etc.
3 1825@ 73.3W each (220W max) or 4@ 54W ea (216W max)

 

[foxygreen]

I am planning on vegging my 7 young WWs in there til I get my bigger tent....can someone give tell me how much light will be in 2x4x5 tent ? using the citizen clu048 1818 6th gen??


Citizen COBs are one of the most economical choice for DIYers. The CLU-1818 series offers unmatched performance for its price.

CLU-1818 is a nominal 50V COB which can operate up to 4.14A max (approximately 250W). Best efficiency is seen below 150W with this chip. This chip offers similar efficiency to a CXB3590 of the same color temperature n the 60-90W range. The 1818 is typically more efficient above 90W, with the CXB3590 being more efficient below 60W

80CRI offers a general spectrum with the red peak centered around 600 nm

1818-80CRIgraph

 

[foxygreen]

I do wish I had gotten a different driver but it was what i could afford at the time

 

[Gree N]

Heres specs on driver copied off Cobkits site

Constant voltage/ constant current "A" version of 48V driver is voltage and current adjustable for maximum utility with CLU048-1818 and CLU058-1825.

HLG-185H-SPEC

Also works with 36V COBs like CLU048-1212 or CXB3590 at reduced total power output (approximately 150W) while allowing an upgrade path to 50V cobs later on. For maximum current the -36A drivers are a better fit for 36V cobs

Constant voltage/ constant current "A" version drivers offer the following advantages:

lower maximum voltage for safer operation
maximum flexibility for expansion — any number of COBs can be added later on. Every COB added increase efficiency of entire array


Note that dimming for "A" versions are via the potentiometer fixed to the unit- they do not offer remote dimming. Drivers are dimmable to approximately 20% of total load

Also please note all COBS must be same series of similar voltage profile, you cant mix 1212 and 1818 as the lower voltage cob will not light



Max current: 4.25A can power the following combination of COBs:

Citizen:

3 1212@ 52.3W each (157W max), 4@38W ea (152W max) , 5@ 29.8W ea (149W), or 6@ 24.6W ea (148W), etc.
3 1818@ 75.3W each (226W max) or 4@ 55W ea (220W max), 5@ 43.4W ea (217W), or 6@ 35.9W ea (215W), etc.
3 1825@ 73.3W each (220W max) or 4@ 54W ea (216W max)

I would be curious to see what configuration they would suggest to wire that many cobs too one driver? It must be run in parallel and I'm guessing because you can limit the amps AND voltage this must prevent thermal runaway as the chip can't draw more voltage in order too pull more amps when it heats up???
If that's what they have recommended then it certainly must be possible and if it works well then I would say it's a great driver choice .

 

[Gree N]

I

 

[foxygreen]

I am going to check out you suggestion ELG-240-C2100A for my next build

 

[foxygreen]

This pic was actually taken out of tent...I have them right now under a T5ho about 4" they will soom be under a cob build still working on

 

[foxygreen]

My first attempt at building a 3 cob light in series...after all this and no light after plugging in...not sure what I've done wrong.

 

[foxygreen]

Girls are coming in from the sun and I'm still trying to get my cob lights done...guess it's another half night of T5

 

[foxygreen]

 

[foxygreen]

I I totally had it wired in series....wrong! Rewired in parallel...thanks Jimmy it is freaking bright omg! Now need to figure out how to dim it ..or lower it using the vo.adj lo.adj buttons?
Driver is MW hlg 185h-48a

 

[foxygreen]

I am also wondering if one of the cobs are going to be effected differently