Bridgelux eb strips Gen 3

Rocket Soul

Well-Known Member
Ah okay,

It's the 1 foot strips, here's a quote of the advice I took from earlier in the forum, as I really wasn't sure about which driver I would need:

"I'd wire those strips in series and drive them with an HLG-60H-C700A. This saves a few bucks by not needing to buy the Wago Lever-Lock connectors used for parallel panel builds. This will drive up to nine 340mm EB3 slim strips. The driver will crank out 98.1 Volts DC to light nine strips ( 76.3 VDC with seven strips) with 0.70 Amps. The driver's max output voltage is 100 VDC."

I thought I could drive 9 strips with the driver? And since I only have 7 it would be fine?
Sorry, you had some bad advice. The fV oof those strips arent 11ish, its 20ish. I think i know what happened: whoever adviced you assumed that 1 foot strip follows same pattern as 2' and 4' : half the voltage, but 1 foot strips have same voltage as 2 foot strips but half max current.
Check out growmau5 diy vids and start familiarise yourself with reading datasheets its the only way to make sure you dont buy the wrong stuff or burn down your house due to someones bad advice.

Edit: sorry, this was based on the 280 mm stripps, not sure on the slim line.
 

Saad786

Member
On the slim line 1ft BXEB-L0340U-xxx0750-C-C3

Forward voltage is shown as 10.9v on the datasheet

The 2ft indeed have ~20fv, but I can see on the data sheet it says 10.9v for the 1foot strips? I'm so confused because I'm clearly reading the data sheet for the strips wrong but I don't understand how/where
 

Moflow

Well-Known Member

Rocket Soul

Well-Known Member
On the slim line 1ft BXEB-L0340U-xxx0750-C-C3

Forward voltage is shown as 10.9v on the datasheet

The 2ft indeed have ~20fv, but I can see on the data sheet it says 10.9v for the 1foot strips? I'm so confused because I'm clearly reading the data sheet for the strips wrong but I don't understand how/where
Youre right, it should be working. Can you measure the dc output of the driver? V and A?
 

Rocket Soul

Well-Known Member
Flashing/strobing of leds isu usually due to insufficient voltage. Figure out if the driver is outputting what it should. It could. Also be some problem of your driver shutting down for a sec then turning back on.
Disconnecting everything and reconnecting might help. Try what happens with 4 strips in series aswell. If a lower amount of strips lights up with no problem its pretty certain to be too little voltage provided or the strips having higher voltage.
Have you been able to confirm you have the right product (strips are 340 mm and not 280?)
 

Rocket Soul

Well-Known Member
Okay I re-wired and holy shit these lights are amazing, I have every strip working now, thinking of adding a red spectrum strip for flower, can I just add the to the same series or since it'll have different ratings/outputs I must wire separate?
Glad you got it worked out. Yes, you can add another strip iin series as long as you still have enough voltage overhead on the driver. Make sure the 700 mA is not highrr than the max current of the strip and you should be fine.
 

cobshopgrow

Well-Known Member
on the eb 3 slim it should be 5cm 10 leds each, one led = 5mm.
My 340mm have 68 leds each (if i am right) am using 3808 leds on 320W.

For the regular 1 foot they printed 7S8P so 56 leds i would say.
 

Demas

Well-Known Member
Please Can you check my PPFD?
In forum I found this information EB strim G3 use same led like G2

I use data from this: - EB Series Gen2 3000K@700mA(87,5mA per diode)
QER=4.84 µmol/J
LER=331.66 lm/W

EB gen 3 have 186lm
Eff 56%
120W = 67,2 PAR W
Space 30*120cm = 0,36m2

67,2*4,84 = 325,248 umol/s

325,248/0,36 = 903 PPFD
With 10%Wall lost PPFD is 813,12.
Is it ok?
 

cobshopgrow

Well-Known Member
sounds good, maybe no setup for CO2 but power conservative.

i dont think you will have less lumens compared to your cxb3590, youll have it all worked out, go for it.
 

cobshopgrow

Well-Known Member
both will do it there no single daisy chain, should be safe.
differences between the resistance of your 2 configs shouldnt matter, so why not option 2.
the + - traces on the sides are pretty wide, otherwise option 1 is in slight advantage there, i think.
 

Rocket Soul

Well-Known Member
Finally i got full reports from TEKNIK of the eb gen 3, 2700k 90 cri. The strip used was the 590 mm slim version.
Some notes: tests are made at working temperature, not pulsed. The range is 380-840nm

Please note that both ppf and radiated watts are in the report, this last thing is note worthy as we are getting more and more into lights incorporating UV and low nm: these nm will always be at disadvantage as 50% efficiency 380 is much less, like almost half iiuc, of a 730nm diode at 50% efficiency. Please correct me if those numbers are wrong. The idea is to use both ppf/w and % efficiency when we judge a light so that sacrificing ppf/w in order to get at those pesky sub 400 nm we all seem to crave doesnt mean that it tanks the lights stats. Kinda like cmh looks much better when we look at % efficiency than if you look at ppf. However no real uv in these strips though.

Efficiencies are around 53% or 2.67 at near to nominal and all numbers are board numbers, not system. Not too shabby hard to say about true to datasheet cause the 90 cri section is a joke, every cct with 161 lum/w iirc.


I also gleamed a peak on what TEKNIK is looking at next, some very interesting stuff but i had to promise not to divulge too much but safe to say that Buddies isnt his last product by far, but covid and just general freezed up cashflows is putting a hold on most stuff. I gather it will be premium rather than bang for buck.Screenshot_20200502-053545_Drive.jpgScreenshot_20200502-053514_Drive.jpgScreenshot_20200502-053545_Drive.jpgScreenshot_20200502-053514_Drive.jpgScreenshot_20200502-053427_Drive.jpgScreenshot_20200502-053427_Drive.jpgScreenshot_20200502-053322_Drive.jpg
 
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