Your spreadsheet tells that a 3500K CD bin 36V CXB3590 at 50 degree Celsius, +-33V and 64.01% efficiency consumes 22.9 watts and gives 2.98 umol per watt to the plants. This spreadsheet is from supra and i give it 25 cents.
I am planning to make my own voltage/ampère/wattage meter (arduino based) in each light fixture and make them able to daisychain with each other so that is is possible to run 4096 fixtures on 1 controller. Temperature of the COBs, voltage and current are lohged.
Yes spreadsheets from Supra.
Do you have a datasheet showing how many lm/Watt on the 3590 72v?
Same as 36V, they're just wired differently to create more options for lighting designers.
TTystickk is right.
There are lots of opinions, but for me just the 3000K and 3500K cobs are all I run
Thanks, I happen to be running those very same 72V CXB3590 chips even as we type.
I originally got all 3500K, but as I finish my refit I'll be ordering 3000K chips to replace those that got wet.
That will be cool to see, because I think my 3000k side make bigger buds.
I think I may go with those as well. I been tossing up many ideas, but the 72v seems to be the best option for future expansion
Back of the tent usually has the best reflectivity. I can do a true side by side in my setup, no outside variables except Kelvin temp.
I can't say either is better (cuz I don't think one is), I think it comes down to the style of fixture you're trying to build vs available drivers.
i was thinking if I drive the 72v cob with 1.05a = 75w per cob, needing only 8 cob's to achieve 600w @ 56%+/- efficiency vs 12 36v @ 1.4a cob's to get the same amount of light . Am i over thinking this thing or what ?
(8 )72v @ 1.05a = (8 )36v @ 2.1ai was thinking if I drive the 72v cob with 1.05a = 75w per cob, needing only 8 cob's to achieve 600w @ 56%+/- efficiency vs 12 36v @ 1.4a cob's to get the same amount of light . Am i over thinking this thing or what ?
thanks for the help guy's
That drivers are dangerous. Lol.