Matching Drivers and COBs

robincnn

robincnn

Well-Known Member
littlejacob said:
Knowing that hlg-185-1400 could put out 1540mA if we fallow this logic!
Click to expand...
Yes, see 1569.9 mA
http://www.meanwell.com/mw_search/hlg-185h-c/HLG-185H-C1400-RPT.PDF
upload_2015-12-5_21-59-52.png

Malocan said:
If i would dimm my light to 195,10 Watt output, would my COBS run then with 700ma?
0,7A * 32.75V * 8 COBS = 183,4W
183,4W / 0,94%(driver) = 195,10W
Click to expand...
Your calculation looks correct. I would not care if cobs run at 700 or 770ma. But it seems like you want to make sure they run at 700ma.
 
S

sethimus

Well-Known Member
littlejacob said:
Bonjour
Sorry will...it is an other member...too many peoples too many weed...confusion!!!
And I smoke only 1/1.5gr day...no.more...but I really smoke...not like 95% of other smoker...I explain...every time I see a vid on weed or ash the guy blow some at the end...it is like he breeze it than immediately put off the smoke...lol...it is not smoking for me...When I smoke I respect the products...so I keep it in my lungs as long as I can to fell it...smoking like some are is a waste of time/weed/money!
Cxb 36V @700mA are 32.72V and 64%
Have a great day ★
Click to expand...
that's just plain stupid. inform yourself about how fast your lungs can absorb the cannabinoids (immediatly), holding smoke in any longer just damages your lungs
 
SupraSPL

SupraSPL

Well-Known Member
a mongo frog said:
After being a hater at first when this site broke loose on these cob builds (probably due to my hps investments and lack of understanding at times) I want to put in my research time.
So a member a while back posted this pic (thanks for the cad pic). I was just wondering if one was to run the cxb 3590 instead of the 3070 with the same drivers in the pic, is it still a beast of a lamp? Im just trying to slowly wrap my head around all this info on this site.
Click to expand...
Yes it is still a good match for the 3590. Assuming 1050mA drivers, 15 COBs in a 5X5, here is estimated the difference in PPFD for each:

CXA3070 3000K AB - 479 PPFD averaged (331W of non productive heat)
CXB3070 3500K BB - 531 PPFD averaged (280W of non productive heat)
CXB3590 3500K CD - 584 PPFD averaged (240W of non productive heat)
brand new 1000W DE - 574 PPFD averaged (712W of non productive heat)

more power.jpg
Based on that I would recommend more power for a 5X5, depending on the height of your ladies/depth of your canopy you might want to aim for 700-900 PPFD averaged. If you went with 4 HLG-185H-C1400 drivers and 16 COBs:

CXB3590 3500K CD - 788 PPFD averaged (385W of non productive heat)
 
Last edited:
bassman999

bassman999

Well-Known Member
SupraSPL said:
Yes it is still a good match for the 3590. Assuming 1050mA drivers, 15 COBs in a 5X5, here is estimated the difference in PPFD for each:

CXA3070 3000K AB - 479 PPFD averaged (331W of non productive heat)
CXB3070 3500K BB - 531 PPFD averaged (280W of non productive heat)
CXB3590 3500K CD - 584 PPFD averaged (240W of non productive heat)
brand new 1000W DE - 574 PPFD averaged (712W of non productive heat)

View attachment 3558393
Based on that I would recommend more power for a 5X5, depending on the height of your ladies/depth of your canopy you might want to aim for 700-900 PPFD averaged. If you went with 4 HLG-185H-C1400 drivers and 16 COBs:

CXB3590 3500K CD - 788 PPFD averaged (385W of non productive heat)
Click to expand...
This is making me feel bad about my CXA purchase
 
littlejacob

littlejacob

Well-Known Member
Bonjour
@bassman999 do not fell bad...there is a new french cob seller called growupled and they made cxa1816 P4 panels they push it at max output 65w I guess and the guy have good results for a very inefficient light...so with your cxa@1A if I remember well...you will pull more than gpw...I bet on it!
Pump up the volume!
And a better cob will be out soon...so maybe I will be the one who will feel bad about having cxb 3590 in a not so far future...!?! I hope it is not going to be in March or April cause I will order in February 8 or 12 cxb 3590 and 2 driver!
I just wait to see final result/weight to decide how many cob/w in the 3.5x3.5
and the 4x4...maybe 8 @200w in the first and 8@400w in the 4x4...or 400w and 600w...to be sure to have 500g and 800g...1300 every 70 days!
CU
 
bassman999

bassman999

Well-Known Member
littlejacob said:
Bonjour
@bassman999 do not fell bad...there is a new french cob seller called growupled and they made cxa1816 P4 panels they push it at max output 65w I guess and the guy have good results for a very inefficient light...so with your cxa@1A if I remember well...you will pull more than gpw...I bet on it!
Pump up the volume!
And a better cob will be out soon...so maybe I will be the one who will feel bad about having cxb 3590 in a not so far future...!?! I hope it is not going to be in March or April cause I will order in February 8 or 12 cxb 3590 and 2 driver!
I just wait to see final result/weight to decide how many cob/w in the 3.5x3.5
and the 4x4...maybe 8 @200w in the first and 8@400w in the 4x4...or 400w and 600w...to be sure to have 500g and 800g...1300 every 70 days!
CU
Click to expand...
Is the next cob (CXC??) already planned to release or speculation?
 
littlejacob

littlejacob

Well-Known Member
Bonjour
I guess both...!
Maybe not cxc but they was cxa...now since few month cxb...and now it take less than 2 years to upgrade tech...
And since many led company use this tech now we will see new grow cob with better spectrum soon (light pink cob???) If there is many $ on the table grow cob will evolve fast.
Maybe one day we will have the perfect spectrum or a divice wo will adjust it to each plants need at a moment of the day and 80% efficiency...the problem this day will be that if you accidentally fall into your grow box nobody will find you until harvest...lol!
CU
 
bassman999

bassman999

Well-Known Member
littlejacob said:
Bonjour
I guess both...!
Maybe not cxc but they was cxa...now since few month cxb...and now it take less than 2 years to upgrade tech...
And since many led company use this tech now we will see new grow cob with better spectrum soon (light pink cob???) If there is many $ on the table grow cob will evolve fast.
Maybe one day we will have the perfect spectrum or a divice wo will adjust it to each plants need at a moment of the day and 80% efficiency...the problem this day will be that if you accidentally fall into your grow box nobody will find you until harvest...lol!
CU
Click to expand...
I hear each strain has slightly different spectrum requirements and intensity needs.
Maybe new light will sense plants needs and auto adjust
 
SupraSPL

SupraSPL

Well-Known Member
bassman999 said:
This is making me feel bad about my CXA purchase
Click to expand...
No worries man, still half the heat of the top performing HPS. Also you have to factor in the lower cost of the CXA, because they are cheaper/PAR W you can afford to run them softer. At 700mA they are over 50% efficient. I was able to get over 1.3gpw in soil with mid yielding varieties using CXA3070 3K AB @ 700mA (25W ea) and I think that was before I had reflectors on the outer COBs so there is plenty of room for improvement.
 
bassman999

bassman999

Well-Known Member
SupraSPL said:
No worries man, still half the heat of the top performing HPS. Also you have to factor in the lower cost of the CXA, because they are cheaper/PAR W you can afford to run them softer. At 700mA they are over 50% efficient. I was able to get over 1.3gpw in soil with mid yielding varieties using CXA3070 3K AB @ 700mA (25W ea) and I think that was before I had reflectors on the outer COBs so there is plenty of room for improvement.
Click to expand...
Thank for the info.
I was thinking about getting more cobs, but wasnt sure what to add to the 6 cxa3070 3000k ABs I have
 
SupraSPL

SupraSPL

Well-Known Member
There is still a lot of testing and uncertainty about which is "best" but one thing is for sure, all the COB are doing an awesome job so I think you can't really go wrong with a top bin CXB3590. 2700K CB, 3000K CB, 3500K CD, 4000K 80 CRi CD, 4000K 70 CRi DB, maybe even 5000K CD and you can mix and match them any way you like.

I still need to do more testing to see if 3070s behave differently than 3590s at low current.
 
littlejacob

littlejacob

Well-Known Member
Bonjour mes amis!
4000ºk DB...OUH la la! This one looks cool...with a few 660nm mono I guess there's 5w...maybe cree one!?
Is it 60% efficient @1400mA?!?
I hope @REALSTYLES will bloom under cxb 3590 6500ºk DD to know if it is a good option or not!
But to be sure of that we would need a test with 5 clones, same soil, nutes, etc under a 3000/3500/4000/5000/6500ºk at the same time each in his own box...but even if the clones come from the same plant they don't have the same shape so...
Or the answer is in the strains...maybe more blue for sativa (but I will use 730nm for a long sativa I plan to grow in an independent box...a house just for her!)
Have a great day ★
 
badtorro

badtorro

Well-Known Member
SupraSPL said:
This chart shows how many COBs you can fit on each driver. Hopefully it will save DIYers some time or give them some ideas.

If the number of COBs is 3.93 for example, you could run 4 and you won't get the full drive current but you will get full driver efficiency. If the number is 4.1 that is a very good match, full driver efficiency and cost efficiency. (Driver efficiency is highest when the voltage load on the DC side is at or near the maximum)

The high voltage drivers work with the COBs wired in series. The high current drivers (HLG-320H and 600H) work with the COBs wired in parallel and those are good options if you want to run multiple COBs at high current. They are all dimmable. Prices are based on Onlinecomponents.com because they have $6.95 flat shipping cost. If you are buying 10 or more Sager might be the best bet.

View attachment 3500031
Click to expand...
hello SupraSPL, thanks for all the info! Much appreciated.

What do you think about power supply like Meanwell 709-LDD-1500L (link to mouser)?

I'm looking to power 9x CXB3590@50W ea in 3x3 tent (1 cob/sq ft).
709-LDD-1500L sitting at retail price 5.98€/piece is dirt cheap comparing to the HLG models. Total for 9 pieces would be 53.82. That's insane! Am I missing something?
It's also advertised as 95% efficient.

Only question is: I'm not 100% if 709-LDD-1500L can support a single CXB3590 36v @50W
what do you think?
 
littlejacob

littlejacob

Well-Known Member
badtorro said:
hello SupraSPL, thanks for all the info! Much appreciated.

What do you think about power supply like Meanwell 709-LDD-1500L (link to mouser)?

I'm looking to power 9x CXB3590@50W ea in 3x3 tent (1 cob/sq ft).
709-LDD-1500L sitting at retail price 5.98€/piece is dirt cheap comparing to the HLG models. Total for 9 pieces would be 53.82. That's insane! Am I missing something?
It's also advertised as 95% efficient.

Only question is: I'm not 100% if 709-LDD-1500L can support a single CXB3590 36v @50W
what do you think?
Click to expand...
Bonjour
I would take some dimmable driver with all that watt in a 3x3...450w is more than enough...I currently light a 3.5x3.5 with 4 cxb 3590 3500ºk 36V CD @1400mA and it is perfect...I want nine cob too but it will be @1050mA!
I am not sure of the max weight we can pull from a sq/ft...I have to figure out!
It was my plan too at first 9x50w but the only thing it will do is bleaching my leaves because of too many light cones crossing...if forget to mention that my cxb are on single hs since a cxb can light 1.5x1.5 easily @1400mA
Have a great day ★
 
bassman999

bassman999

Well-Known Member
littlejacob said:
Bonjour
I would take some dimmable driver with all that watt in a 3x3...450w is more than enough...I currently light a 3.5x3.5 with 4 cxb 3590 3500ºk 36V CD @1400mA and it is perfect...I want nine cob too but it will be @1050mA!
I am not sure of the max weight we can pull from a sq/ft...I have to figure out!
It was my plan too at first 9x50w but the only thing it will do is bleaching my leaves because of too many light cones crossing...if forget to mention that my cxb are on single hs since a cxb can light 1.5x1.5 easily @1400mA
Have a great day ★
Click to expand...
LittleJacob is that like 16-18w/ft^2?
 
SupraSPL

SupraSPL

Well-Known Member
badtorro said:
hello SupraSPL, thanks for all the info! Much appreciated.

What do you think about power supply like Meanwell 709-LDD-1500L (link to mouser)?

I'm looking to power 9x CXB3590@50W ea in 3x3 tent (1 cob/sq ft).
709-LDD-1500L sitting at retail price 5.98€/piece is dirt cheap comparing to the HLG models. Total for 9 pieces would be 53.82. That's insane! Am I missing something?
It's also advertised as 95% efficient.

Only question is: I'm not 100% if 709-LDD-1500L can support a single CXB3590 36v @50W
what do you think?
Click to expand...
They are DC to DC so would be ideal for a solar powered setup. Max voltage is 30 on that model though so not a match for most COBs that would run at 1400mA.
 
littlejacob

littlejacob

Well-Known Member
Bonjour
I guess you will have to consider the hlg-185-1400b + hlg-240-1400b for your set up...8 will be enough with 2 x 185-1400b...105 $ + shipping and 368 $ for cxb 3590...473 $ plus 40 $...513 $
There's a 7 years guarantee on hlg! (And you will keep it 50000H or more @1400mA!)
CU
 
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