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the cob does take only that volts which it needs with this kind of driver. at 1050ma the cob use around 50 volts (Tc=50C) Your driver has a Volt pool from 152-305. So you have to connect minimum (152Volt/50Volt=3,04cobs) 3,04cobs, that does mean minimum 4 cobs. For maximum amount of cobs you...

Hello, the red osrams runs around 150-200ma on the first picture and one the 2nd picture they runs around 350-400ma. The cob is on both pictures around 1ampere. 1st picture: 49watt cob + 6-9watt red (not exactly) 2nd pciture: 49att cob + 17-20watt red (not exactly) i...

Hi yeah i agree with you, this company seems to be mega greedy...:finger: robinccn showed in his thread(post#405) how to build a much better lamp for only 200dollar https://www.rollitup.org/t/diy-passive-cooling-with-pin-heatsinks-sst120-and-sst140.906729/page-21

ledil have a lens wich fit, but it has a tight beam angle:/ http://www.ledil.com/products?ds=1&mn=&ld=386&md=&xd=&mh=&xh=&mt=&mf=&xf=&sf=&ty=&fm=&sm=&cn=&vc=&io=&tro=&trt=0&tpo=&tpt=0&tr=&tp=&fr=&st=0&pg=0&lo=&ol=0&of=0&od=0&oh=0

thanks guod

hello guys, please help me with my question above:/

Hi, i need help, i have a question about grounding. I use Meanwell ELG-C drivers, this drivers serie dont have a ground cabel on the AC side, only 2 wires (blue and brown). I checked the datasheet some days ago and noticed the driver is "Class I" . On wikipedia i read that i have to connect...

im not sure, but i think its this chip: http://www.osram-os.com/osram_os/en/products/product-catalog/leds-for-general-lighting/duris-s-10/index.jsp

Hello Jorge, sorry for my late answer, but i had a lot stuff to do in real life:mad:. And i cant answer your question because i dont have access to the tent with the no-reflector fixture at the moment. I moved the tent to my good friends home :/ But i will try to make a smillar kind of test...

show pls your numbers

yeah guys i come from germany :), and no problem for your offtopic posts. This posts are always welcome, your posts show often really interesting stuff.:peace: You and Psuagro. are from spain:confused: and guod too:confused:

yeah thats all confusing :confused:. I think you are right, its seems to be not the newest version, but in the pdf (PDF is from 02/16) which i link it is marked as upcoming product, so maybe still a newer version but not the newest...

yes, i know. I just wanted to give Kempo an answer. Yes thanks :dunce: ok thanks

One month ago i asked him, he just said: "NO" But you could ask@robincnn from : www.northerngrowlights.com He is maybe a option for you

Tom, did you test the explosion without lenses? do you have still the par footprint available? If yes could you share please, im interested to see how much output you loose through the lens and on the other hand i would like to see how much better uniformity you win through the lens. I hope i...

yeah lol, the explosion has uniformity around 63%. im really impressed, and the par numbers looks really high too, for "only" 550W

yeah really nice uniformity for 60cm distance, im impressed from your work and lenses

Hello Tom, Thanks for sharing this infos, nice work. But your solution has one disadvantage i think, you have to hang you lamp pretty high above plants. And this can suck in a growbox which has a hight from 2 meter. i would like to see "uniformity ppfd footprint" at differnt heigh, if you have...

hm... i dont know if you ever checked the internet for led grow reports? but there a so many grow reports with led out there... and a lot of them are "good" documented. I dont know why you say something like that? Only beacuse HPS has some more well documented grows? No wonder, much older tech...

no not really, i just waited 30min to got this price. Maybe i got luck, but i noticed that the price drops often around 2,60euro