Bridgelux EB Series Build

Chip Green

Chip Green

Well-Known Member
Well, I care not if the "LUX" is actually correct, its just a constant to measure against. Now at least I know where to draw the line.
Same should apply to an app LUX reading.
I did one run where I packed 15 strips at 700ma on a 2x2 frame, was getting 70K+ LUX at 8", saw no noticeable advantage over the 50K zone, in fact sorta lost yield. due to smaller footprint.....
 
projectinfo

projectinfo

Well-Known Member
Chip Green said:
Well, I care not if the "LUX" is actually correct, its just a constant to measure against. Now at least I know where to draw the line.
Same should apply to an app LUX reading.
I did one run where I packed 15 strips at 700ma on a 2x2 frame, was getting 70K+ LUX at 8", saw no noticeable advantage over the 50K zone, in fact sorta lost yield. due to smaller footprint.....
Click to expand...
Yeah, in flower...

im thinking 45k to 50k this run, last run i got some light burn i tried 70k+ maybe more, my meter maxes out .

Different strains probably like different intensitys
 
Randomblame

Randomblame

Well-Known Member
At first, an HLG-185H-20 with EBgen2 strips it at least 210w net and 225w at the wall. So you can calculate with 35w/sft which is perfect to get the desired 700-800μMol/s/m²(50.000-57.000lux). Above that you need anyway additional CO² so I would call it a perfect match.
Lux meter conversations are not that accurate like PAR meter measurings but they are perfect to compared intensity levels under the same light source.
An example: Normally the intensity goes down on the sides and in the corners and with the help of a lux meter you can figure out how to distribute the strips to even out brightness across the canopy and optimize uniformity.
The solution: Closer strip spacings on the sides and the widest gap in the center. This eliminates the center hotspot and increase side brightness. This way you get up to 80% uniformity!
IMO, lux meter also the cheap ones are very useful...

Apps are only useful if your camera sensor can read values up to 60.000lx but that's rare the case especially with newer phones.
 
Fawkes420

Fawkes420

Well-Known Member
Is anyone got more info about that Bridgelux maybe is underrated their max current as said at LEDG?
"
After crunching the numbers, it’s clear that 2 families of strips stand out above the others: the Samsung F-Series Gen.3 and the Bridgelux EB Strip Gen.2. Both of these strips pack a lot of diodes per foot and offer near-identical efficiency. While the Samsung LM561C has a higher efficacy on paper (187 lm/w), you’ll notice that in our designs, the EB strips often have a higher efficacy than the F-strips. Interestingly enough, we believe the reason for this is that Bridgelux has underrated their EB Gen.2 strip max current.

If our hunch is correct and Bridgelux is, in fact, running 2835 .2W 3V Gen.2 diodes on these strips, then the 1-footers would have a true max of 1,200mA (not 700mA, as the data sheet says) and the 2-footers and 4-footers would have a true max of 2,400mA (not 1,400mA, as the data sheet says). That being said, if the true max current of these strips is significantly higher than stated, we would actually be running the strips quite soft, and, as a result, they will run at a higher efficacy than the F-series in our designs.
 
klx

klx

Well-Known Member
Fawkes420 said:
Is anyone got more info about that Bridgelux maybe is underrated their max current as said at LEDG?
"
After crunching the numbers, it’s clear that 2 families of strips stand out above the others: the Samsung F-Series Gen.3 and the Bridgelux EB Strip Gen.2. Both of these strips pack a lot of diodes per foot and offer near-identical efficiency. While the Samsung LM561C has a higher efficacy on paper (187 lm/w), you’ll notice that in our designs, the EB strips often have a higher efficacy than the F-strips. Interestingly enough, we believe the reason for this is that Bridgelux has underrated their EB Gen.2 strip max current.

If our hunch is correct and Bridgelux is, in fact, running 2835 .2W 3V Gen.2 diodes on these strips, then the 1-footers would have a true max of 1,200mA (not 700mA, as the data sheet says) and the 2-footers and 4-footers would have a true max of 2,400mA (not 1,400mA, as the data sheet says). That being said, if the true max current of these strips is significantly higher than stated, we would actually be running the strips quite soft, and, as a result, they will run at a higher efficacy than the F-series in our designs.
Click to expand...
AFAIC Bridgelux has been the kings since pre 2014. Cree got hyped, now its Samsung. But Bridgelux is the smart choice pretty much every time.
 
Chip Green

Chip Green

Well-Known Member
In the near future I have aspirations of replacing one, or possibly all, of my original EB series Gen1 builds. At that point I will have a nice little collection of EBs that have long since paid for themselves, and will finally be able to really see what the actual max current capacity might be...…
 
D

Dachem2010

Well-Known Member
Randomblame said:
At first, an HLG-185H-20 with EBgen2 strips it at least 210w net and 225w at the wall. So you can calculate with 35w/sft which is perfect to get the desired 700-800μMol/s/m²(50.000-57.000lux). Above that you need anyway additional CO² so I would call it a perfect match.
Lux meter conversations are not that accurate like PAR meter measurings but they are perfect to compared intensity levels under the same light source.
An example: Normally the intensity goes down on the sides and in the corners and with the help of a lux meter you can figure out how to distribute the strips to even out brightness across the canopy and optimize uniformity.
The solution: Closer strip spacings on the sides and the widest gap in the center. This eliminates the center hotspot and increase side brightness. This way you get up to 80% uniformity!
IMO, lux meter also the cheap ones are very useful...

Apps are only useful if your camera sensor can read values up to 60.000lx but that's rare the case especially with newer phones.
Click to expand...
My killawatt I was surprised it was pulling 228w on a HLG-185H-20A
 

Attachments

projectinfo

projectinfo

Well-Known Member
Hey, i got asked today if the gen 1 bridgelux eb strips 3000k are similar to the spectrum of a hps light.

Im trying to find the color temp chart for the strips to compare to the hps Color temp

Something like this

_20180815_175642.JPG
 
nfhiggs

nfhiggs

Well-Known Member
Fawkes420 said:
Is anyone got more info about that Bridgelux maybe is underrated their max current as said at LEDG?
"
After crunching the numbers, it’s clear that 2 families of strips stand out above the others: the Samsung F-Series Gen.3 and the Bridgelux EB Strip Gen.2. Both of these strips pack a lot of diodes per foot and offer near-identical efficiency. While the Samsung LM561C has a higher efficacy on paper (187 lm/w), you’ll notice that in our designs, the EB strips often have a higher efficacy than the F-strips. Interestingly enough, we believe the reason for this is that Bridgelux has underrated their EB Gen.2 strip max current.

If our hunch is correct and Bridgelux is, in fact, running 2835 .2W 3V Gen.2 diodes on these strips, then the 1-footers would have a true max of 1,200mA (not 700mA, as the data sheet says) and the 2-footers and 4-footers would have a true max of 2,400mA (not 1,400mA, as the data sheet says). That being said, if the true max current of these strips is significantly higher than stated, we would actually be running the strips quite soft, and, as a result, they will run at a higher efficacy than the F-series in our designs.
Click to expand...
Underrating their max current doesn't make them any more efficient. Their stated efficacy rating has nothing to do with their max current - its based how much light they put out at their rated test current of 350 mA. Their max current (either actual or stated) is not really relevant to that number.
 
wietefras

wietefras

Well-Known Member
Does Bridgelux have double row strips already? I don't like single row strips. Too much work for no real benefit.

It does have a better price per strip though.
 
Last edited:
wietefras

wietefras

Well-Known Member
nfhiggs said:
Underrating their max current doesn't make them any more efficient. Their stated efficacy rating has nothing to do with their max current - its based how much light they put out at their rated test current of 350 mA. Their max current (either actual or stated) is not really relevant to that number.
Click to expand...
I guess the thing is that ledgardner (who made that quoted remark) compares strips at 75% of maximum current. Instead of picking a current where both strips have similar efficacy, or using their tested current.
 
Fawkes420

Fawkes420

Well-Known Member
Hi.
Would it help to increase the light at the borders if i put the 2 utmost strips closer to each other? Or maybe lowering the utmost strip on each side?
I have a difference of about 20000 lux at same distance compared to the center of the lights.
 
D

Dachem2010

Well-Known Member
Has anyone done a build with these strips and added 660nm HE photo red from Cree and far red I guess I'm really asking any supplemental lighting people have done I know I will be adding UV just suck solarcure on has 4 ft bulbs
 
projectinfo

projectinfo

Well-Known Member
Dachem2010 said:
Has anyone done a build with these strips and added 660nm HE photo red from Cree and far red I guess I'm really asking any supplemental lighting people have done I know I will be adding UV just suck solarcure on has 4 ft bulbs
Click to expand...
Have you ever done a side by side with far reds?

Just wandering.

From what i hear its not a major difference . Donno if it s worth the hassle :/
 
D

Dachem2010

Well-Known Member
projectinfo said:
Have you ever done a side by side with far reds?

Just wandering.

From what i hear its not a major difference . Donno if it s worth the hassle :/
Click to expand...
From what I've heard of the Emerson effect has an impact on rate of photosynthesis but also looking at the Spectrum of the EB strips it has those spectrums in it so I didn't know if it would make a big deal or not but it doesn't have any UV so I definitely want to add that I'm just having trouble finding a UV light with Spectrum in the 285 nm range which is the peak absorption for the
UVR8 protein
 
Last edited:
projectinfo

projectinfo

Well-Known Member
Dachem2010 said:
Ok for not from what I've heard of the Emerson effect but also looking at the Spectrum of the EB strips it has those spectrums in it so I didn't know if it make a big deal or not but it doesn't have any UV so I definitely want to add that I'm just having trouble finding a UV light with Spectrum in the 285 and o Meter range which is the peak absorption for the
UV 8 protein
Click to expand...
Dachem2010 said:
From what I've heard of the Emerson effect has an impact on rate of photosynthesis but also looking at the Spectrum of the EB strips it has those spectrums in it so I didn't know if it would make a big deal or not but it doesn't have any UV so I definitely want to add that I'm just having trouble finding a UV light with Spectrum in the 285 nm range which is the peak absorption for the
UVR8 protein
Click to expand...
Post if you find them. Please.
 
You must log in or register to reply here.
Top