nfhiggs
Well-Known Member
Those are rather small at only 280 mm. You would need about 60 to properly light up a 1 meter square space.
Bridgelux EB Series Build
- Thread starter brahbbyB
- Start date
ThatSpudGuy
Well-Known Member
Ok if i were to get the bigger strips how many of them would i need? Something around say 100 watts
Serva
Well-Known Member
Why don‘t you want to take the 4ft strips?
4ft x 4ft = 16sqft
10-20w/sqft x 16sqft = 160-320w
So a HLG-320H-48A (dimmable between 160-320w with build in poti).
Get as many strips as your wallet can afford, or as many as you like, and make some series/parallel wiring.
4ft x 4ft = 16sqft
10-20w/sqft x 16sqft = 160-320w
So a HLG-320H-48A (dimmable between 160-320w with build in poti).
Get as many strips as your wallet can afford, or as many as you like, and make some series/parallel wiring.
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Serva
Well-Known Member
60 strips @700ma would be 960w!
even at nominal current I think 460w (28w/sqft) would be too much as veg light.
ThatSpudGuy
Well-Known Member
So if i used say 10 strips would that driver run the 10 of them?60 strips @700ma would be 960w!
Randomblame
Well-Known Member
Why not using generation 2 of the EB-series? 180lm/w vs. 159lm/w@350mA!
They cost the same and should be available within the next few weeks.
https://www.digikey.de/products/en/optoelectronics/led-lighting-cobs-engines-modules/111?k=&pkeyword=&v=976&s=60762&FV=ffe0006f&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25&cur=USD&lang=en
For a veg tent a HLG-240H-20A(gen2 strips) or -24A(gen,1 strips) would be more than enough.
If you take 18 1ft. gen1 strips in parallel to the 24v driver(24A, 10,4A) each strip get ~578mA or 13,4w(154lm/w).
If you take 21 1ft. gen2 strips in parallel to a 20v driver(-20A, 12,5A) each strip get ~595mA or 11,9w(175lm/w).
They cost the same and should be available within the next few weeks.
https://www.digikey.de/products/en/optoelectronics/led-lighting-cobs-engines-modules/111?k=&pkeyword=&v=976&s=60762&FV=ffe0006f&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25&cur=USD&lang=en
For a veg tent a HLG-240H-20A(gen2 strips) or -24A(gen,1 strips) would be more than enough.
If you take 18 1ft. gen1 strips in parallel to the 24v driver(24A, 10,4A) each strip get ~578mA or 13,4w(154lm/w).
If you take 21 1ft. gen2 strips in parallel to a 20v driver(-20A, 12,5A) each strip get ~595mA or 11,9w(175lm/w).
Serva
Well-Known Member
For the gen2 have a look at HLG-320H-42 (http://www.mouser.com/ds/2/260/HLG-320H-SPEC-806190.pdf)
There you will find the rated current of the driver. Divide the number by 10 (your amount of strips) and see, if it‘s not too much for the strips. (https://www.bridgelux.com/sites/default/files/resource_media/DS131 Bridgelux EB Series Gen2 Data Sheet 20171020 Rev A.pdf) ->1120mm strips
(Answer should be, yes its possible, a little bit over nominal current)
There you will find the rated current of the driver. Divide the number by 10 (your amount of strips) and see, if it‘s not too much for the strips. (https://www.bridgelux.com/sites/default/files/resource_media/DS131 Bridgelux EB Series Gen2 Data Sheet 20171020 Rev A.pdf) ->1120mm strips
(Answer should be, yes its possible, a little bit over nominal current)
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Serva
Well-Known Member
42v = 95% efficiency
20v = 93,5 efficiency
So wouldn‘t it be better to take a higher voltage driver? If I remember correctly, it was you telling me that point...
Randomblame
Well-Known Member
With a HLG-240 you would get around 550-600μMol/s(gen1/gen2) which is more than enough for a 1m² veg tent IMO!
Indeed, you could also use it for the flowering cycle because that's still comparable to a 400w HPS
Indeed, you could also use it for the flowering cycle because that's still comparable to a 400w HPS
Randomblame
Well-Known Member
Yepp, but it need series parallel connections and I wanted to keep it simple for the first time.
Randomblame
Well-Known Member
But you are right! He could put 2 clusters of 10 parallel stripes in series for example, that's not that hard.
And 1.5% better efficiency is nice bump for nothing than a different wiring circuit and a different driver model.
And 1.5% better efficiency is nice bump for nothing than a different wiring circuit and a different driver model.
"1 meter square space."
What? Most people are running 30-50 watts/square foot.60 strips @700ma would be 960w!
Serva
Well-Known Member
Yeah, I know... Just thought about it after writing 1120mm in the next post ...
Actually I would do 2 or 3 rows (more strips, middle row is running at 1/4 or 1/2 current, depends on wiring) of the 1ft strips. I just love to have as many strips as possible. And I would get 2 driver, otherwise the first 2-3 weeks, 90% of the light is wasted.
And to make it nice and uniform, spread the strips logarythmically.
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Serva
Well-Known Member
For flowering maybe?
Atleast for my plants everything about 35w/sqft is too much in flower and will cause problems.
So veg light should be way less... personally I use between 10-20w for the first 3-4 weeks, before I flower them.
Or do you talk about inefficient mh bulbs, or fl tubes?
Because I was able to replace 150w fl tubes, with 50w eb strips. Same results!
nfhiggs
Well-Known Member
The only 100W strips are Samsung Fseries double row in 1120 mm length. I don't think you could fit those in your tent. You could do the double row 560 mm F-series strips - space them about 50 mm apart and use 10 or so.
nfhiggs
Well-Known Member
I would run them at 350 mA. 28w per square foot is just about right.60 strips @700ma would be 960w!
Serva
Well-Known Member
460w @ 1x1m ? That‘s like a 550-600w mh/hps bulb. I really can‘t see any reason to use this as veg light. For flowering it would be a nice light though! (Atleast thats a common choice here in europe 600w hps @ 1m2)
Randomblame
Well-Known Member
A HLG-240H-48A(5,2A) and 6x 560mm double row F-Series strips is a cheap and powerful solution. The strips would run with 866mA or around 40w each. Effiency should be ~175lm/w with 3.000°k and ~182lm/w with 4.000/5.000°k.
1x Meanwell HLG-240H-48A ~70$
6x 2ft DR F-strip is ~150$(25$/pcs)
6x 40*40*40*2mm alu C-channel, 600mm long 20$
Misc parts like wires, Wago's and the likes 10$
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Around 250$ for a 250w light.
And as mentioned above, such a lamp is powerful enough to be used in flowering with good results. The 4k version should produce ~650μMol/s PPF...
1x Meanwell HLG-240H-48A ~70$
6x 2ft DR F-strip is ~150$(25$/pcs)
6x 40*40*40*2mm alu C-channel, 600mm long 20$
Misc parts like wires, Wago's and the likes 10$
-------------------------------------------------------------------------------------------
Around 250$ for a 250w light.
And as mentioned above, such a lamp is powerful enough to be used in flowering with good results. The 4k version should produce ~650μMol/s PPF...