4 ft 70 w samsung custom aluminum pcb strips

jonsnow399 said:
The hard strips MUST be attached to a heat sink, unless you are planning to put a fan on them or run extremely soft. I am running some now on the Heatsinkusa's 2 inch extrusion and they get warm at 25 watts apiece.
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Picks or it didnt happen......
How many are you running on the same piece?
 
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Not really, i have a fan too, but i would hesitate to rely on it, with my luck the fan would crap out.

> i am talking about several 20" fans in the room..but again..i will take heat readings when i get them over plants...and as well with no fans


jonsnow399 said:
If you don't need a heatsink then they're way better than Qb's, I can only relate my experience.
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> i reserve the right to be wrong..they "seemed" cool enough when i did the quick par meter numbers

thanks for the input..
 
PilouPilou said:
Hello @VegasWinner! I checked your link and it seems to be a good offer.. good link! ;) If I choose the 120 led/meter strip to make a light made with 8 strips of 50cm (60LED*8=480 LED @65mA ~80W)... which driver could you advice to me to run them? I wrote 65mA because it is the value used by Samsung on his site but maybe for a strip it is different... Thank you in advance!
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I believe you an run the samsung strips from 350mA to 1050mA. You can use a HLG-120H-C1050A/B for most situations. I have a few of those lying around waiting for a use.
 
ok i tested the strip panel

zero fans=from 37c -31c........with one normal cottage 16" fan..they were from 31c -27c

so..strips not hot

on another note,..i dunno if can get more than around 450 umols or whatever those hydrofarm meters are
this is at 8" or so because when i go closer the angle seems to great to pick only single strips
so the cumulative light thing may be important
 
OLD MOTHER SATIVA said:
ok i tested the strip panel

zero fans=from 37c -31c........with one normal cottage 16" fan..they were from 31c -27c

so..strips not hot

on another note,..i dunno if can get more than around 450 umols or whatever those hydrofarm meters are
this is at 8" or so because when i go closer the angle seems to great to pick only single strips
so the cumulative light thing may be important
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What were they run at for watts to get this?
 
PilouPilou said:
ok.. lenght is not important..it's always 24V - sry for these noob questions but I know only COBs! I'm not familiar to strips it's a bit new for me! ;)
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Diodes are at 24v and 0.5w 1050mA works for a 1m strip. You could wire up to 8 strips in series and get the desired result. That is my starting point.
 
Randomblame said:
Do you know if they also make 2ft. hardstrips or only 5m rolls flex strip?
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I've had some custom hard strips with the LM561C chips designed and now in production in China. They will be 400 x 30 mm, roughly 16.5" x 1.25". Double rows of 48 diodes, 22-24v at 2 amps max, constant current on rigid aluminum PCBs. A "quantum strip" is the idea. Ordered some samples in the S6 bin 4000K 90 CRI selection, will report back in a couple of weeks after testing, if anyone is interested. If all goes well I expect to have them available also in 3000K and 5000K, and 800mm lengths.

-b420
 
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will take a photo today of the new clones and a few tiny seedling under the 15 strip/600 w rig over 4 x 4 ft

the seedlings are very squat ..

next plan is get the light as close as i can..and still keep coverge

then will hookup the flood and drain so they can grow faster..

i am interested to see how this not intense but crazy coverage configuration does..

the strips are so cool and not even close to needing any thing other than air movement
 
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