why dont we collectively throw down for sphere data?
- Thread starter CobKits
- Start date
CobKits
Well-Known Member
can you post links to any other sites you come across, ive already reached out to the two in this thread
sounds like a hookup?
CobKits
Well-Known Member
i was going to assemble some of these and send them. its not the ideal heatsink (what is) but
-it does have 200W dissipation capacity
-we have manufacturer data for it on temp rise vs wattage
https://cobkits.com/product/clu058-1825-light-engine-single/
nevergoodenuf
Well-Known Member
Those look like they are a good match with the 1825, but if you want passive for the 3618, I was told that the Coolbay tera's can protect them up to 400 and something watts. The ones I use from Flip Chip are suppose to have the same .21C/W.
JorgeGonzales
Well-Known Member
That sounds perfect if they provide power. I've only read reports of full fixtures, where the driver was also being tested.
Light output, that's about it. Photons per second, it's what plants crave. We can trust manufacturers on spectrum data, for instance. I compared @Malocan 's spectrometer data against what Citizen provided, and they were practically identical.
CobKits
Well-Known Member
ok first lab that got back to me wanted $540 per test (and if you test 3 currents thats $540 x3 - ouch!
they said they can do raw data and measure input power, lumens and also provide this spectral data for $315:
seems like we could either digitize the curve or sum the data from 400-700 to get what we need.
a barebones lumen measurement with no spectra is only $270 but is less useful for us par-hounds, unless i did the spectrum measurements myself and then we used that to convert lumens to ppf. not sure how varied actual spectograms are from the datasheets
they said they can do raw data and measure input power, lumens and also provide this spectral data for $315:
seems like we could either digitize the curve or sum the data from 400-700 to get what we need.
a barebones lumen measurement with no spectra is only $270 but is less useful for us par-hounds, unless i did the spectrum measurements myself and then we used that to convert lumens to ppf. not sure how varied actual spectograms are from the datasheets
PSUAGRO.
Well-Known Member
hookups are over, I can't beg for more tests.............time to break out the $$$$$$$$$$$$$
light laboratories will take care of you
alesh
Well-Known Member
Well nice, but data sheets already have all this info. The test should also include actual Tc for each measurement.
bggrass
Well-Known Member
Pardon my ignorance, but what are $5k for a grower? 1lb of quality pot - 2 plants in 5 gal buckets? I thought there are a lot of growers around here.... If it is really $5k to buy a sphere, there's gotta be someone or a few that are able to put it together. Gofundme might be a pretty good idea.
Just from mathematical point of view, getting a single result at a specific current won't cut it. There will have to be a lot more tests and recordings in order to establish a pattern so then a formula can be created that will give the desired output at different currents, temps, kelvins. This will be a huge amount of work to get the real data for so many chips out there....
Just from mathematical point of view, getting a single result at a specific current won't cut it. There will have to be a lot more tests and recordings in order to establish a pattern so then a formula can be created that will give the desired output at different currents, temps, kelvins. This will be a huge amount of work to get the real data for so many chips out there....
alesh
Well-Known Member
We're not talking $5k for a sphere big enough.
PhotonFUD
Well-Known Member
CobKits
Well-Known Member
upon further review i dont think light labs are really a good fit
we dont need a one-time measurement of a fixture for marketing or compliance purposes
we need an assload of measurements of many models of chips under different current and thermal conditions.
im looking at buying a sphere instead. at $300-$500 for basic measurements, $3-$5K for a setup is not ridiculous
even this 6" one would do it
http://www.stellarnet.us/spectrometers/integrating-spheres-and-tubes/?gclid=CPeIm6qutc8CFRSUfgodJi8E2A
they want to sell me a spectrometer but i already have an ocean optics fiber optic i jsut need to adapt it, so i may be under $2k here if i can make that 6" sphere work for raw chip testing
we dont need a one-time measurement of a fixture for marketing or compliance purposes
we need an assload of measurements of many models of chips under different current and thermal conditions.
im looking at buying a sphere instead. at $300-$500 for basic measurements, $3-$5K for a setup is not ridiculous
even this 6" one would do it
http://www.stellarnet.us/spectrometers/integrating-spheres-and-tubes/?gclid=CPeIm6qutc8CFRSUfgodJi8E2A
they want to sell me a spectrometer but i already have an ocean optics fiber optic i jsut need to adapt it, so i may be under $2k here if i can make that 6" sphere work for raw chip testing
sixstring2112
Well-Known Member
Why dont you just paint the inside of a basketball white,make a trap door and mount your li cor inside it lmao.see i just saved you 3 to 4 k,thank me laterz 
PSUAGRO.
Well-Known Member
Not a good fit for YOU maybe..............but for final production units it's a great service
you can do some raw chip tests in the smaller units but will never get SYSTEM efficiency, soooooooooo a new toy basically.
PSUAGRO.
Well-Known Member
But you do build and sell almost complete single cob fixtures(minus driver)...........lol
https://cobkits.com/product-category/light-engines/
BTW, if I find out you had anything to do with GG's thread getting harassed&closed, multiple accounts is nothing new to you BobbyG..........well, i'm not going to be happy, we will let RIU be the judge/ jury on that; fucking shameful what happened.........one of the BEST threads on here, invaluable info over the years.
Very similar postings to photonfud, including both recommending a19 led bulbs for grows, nobody does except you and az2000 ( back in the day). You brought up this forum's "clique" mentality when GG cut you off, photonfud said the same shit, forum education levels etc.. GG told you to GTFO of his thread and photoncrud starts his BS, ==== coincidence? maybe
Looking up his etl status on intertek was a smart move,i'll give you that..............all that testing research you've been doing lately, hmmmmmm
Tell me I'm wrong?.........
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CobKits
Well-Known Member
grow up dude, seriously. like i have time for that shit. thats your evidence? were both one of over a dozen posters that think A19s are great off the shelf solutions, its called common sense. there are whole threads about it.
photonfud and GG were going at it in other threads long before he made that post.i stay away from that petty BS.
our posts are literally nothing alike. i sure as shit dont thing 400 umol is useful for anything past seedlings
you might as well say i am welight, or robin, or that guy psuagro who posts on an LED board
im sure the mods track all IPs and could easily clear my name if they gave even the slightest shit about this juvenile bullshit
and yes, i had another account... and when i started this one i was sure to tell every single person on the board that it was me, i have nothing to hide. everybody here knows im bobbyG.
ive got nothing against GG and have never spoken badly about him (despite the fact he apparently didnt feel the same about me, for whatever reason ive never been able to pin down), he was a good contributor and i will be the first to admit i learned a lot from the guy and his passion for the craft was very inspiring. its a damn shame his threads went from a super informative roundtable to what they became, but i have nothing at all to do with the cause and/or end result of that. Even if i didnt like the guy i wouldnt go fucking with somebodys livelyhood.
photonfud and GG were going at it in other threads long before he made that post.i stay away from that petty BS.
our posts are literally nothing alike. i sure as shit dont thing 400 umol is useful for anything past seedlings
you might as well say i am welight, or robin, or that guy psuagro who posts on an LED board
im sure the mods track all IPs and could easily clear my name if they gave even the slightest shit about this juvenile bullshit
and yes, i had another account... and when i started this one i was sure to tell every single person on the board that it was me, i have nothing to hide. everybody here knows im bobbyG.
ive got nothing against GG and have never spoken badly about him (despite the fact he apparently didnt feel the same about me, for whatever reason ive never been able to pin down), he was a good contributor and i will be the first to admit i learned a lot from the guy and his passion for the craft was very inspiring. its a damn shame his threads went from a super informative roundtable to what they became, but i have nothing at all to do with the cause and/or end result of that. Even if i didnt like the guy i wouldnt go fucking with somebodys livelyhood.
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