Cheers mate and you Captain Morgan, is this enough for a scrog? can I ask the formula to get the PPFDAround 980 ppfd. Use this to try out different configs - http://rollitup.org/t/diy-cob-led-calculator.890214/
Cheers mate and you Captain Morgan, is this enough for a scrog? can I ask the formula to get the PPFDAround 980 ppfd. Use this to try out different configs - http://rollitup.org/t/diy-cob-led-calculator.890214/
I've scrogged with as little as 530 PPFD and got great results.Cheers mate and you Captain Morgan, is this enough for a scrog? can I ask the formula to get the PPFD
https://www.cdiweb.com/datasheets/citizen/CITILED-ver5-Selection-Tool.xlsxAny spreadsheets available on those citizens COBs? (especially CLU048-1212 3500K?)
Sure, but we have that information from the manufacturer, numbers which are likely accurate at the minimum and possibly conservative, if Cree and Bridgelux are any indication.I'd say current droop and temperature droop data are very important for our applications, since most of our designs make use of both for better efficiency.
So that essentially means that determines only in laboratory conditions, not real? to avoid distort the figures of the light output was between Tj and Tc? for this reason can be Tj = Tc? And what does it mean for real, real application in practice? .. It means that datasheet simplification, those lumens of light output at Tj = Tc 25 ° C are totally unrealistic .. therefore better basis for comparison using Tj 85 ° C .. how to calculate on paper rather than measurement in real Tc? .. So how do you compare with chips Citizen .. set in the configurator Tj 85 ° C should give accurate and truthful performance comparison between the Cree, Bridgelux, Citizen? .. Very THXHow you get Tj = Tc:
You place your LED on a huge block of copper, which you can cool/heat to the desired temperature. Then you send a quick pulse (like 10ms) of energy into the LED and measure the output.
Lol @ unrealisticSo that essentially means that determines only in laboratory conditions, not real? to avoid distort the figures of the light output was between Tj and Tc? for this reason can be Tj = Tc? And what does it mean for real, real application in practice? .. It means that datasheet simplification, those lumens of light output at Tj = Tc 25 ° C are totally unrealistic .. therefore better basis for comparison using Tj 85 ° C .. how to calculate on paper rather than measurement in real Tc? .. So how do you compare with chips Citizen .. set in the configurator Tj 85 ° C should give accurate and truthful performance comparison between the Cree, Bridgelux, Citizen? .. Very THX
I have to say, the measurements Bridgelux uses for lm/W is pretty goofy. Just don't try to explain fair comparisons in the all things Vero thread. Trust me on this one.Lol @ unrealistic
What does it sound so funny? .. I get to learn and take advice .. if this is the case ..thxLol @ unrealistic
Duh. Although since you are in this thread, you probably want to look at SupraSPL's spreadsheets, and search and read about them. The CXB3070 is likely quite a bit ahead at lower currents.If it really .. for Citizen CLU48_1212 example. 3500k 80CRi very proficient superior opponent vs. CXB3070 3500k 80CRi BB .. almost the same performance and efficiency in the soft run amps and hard running a little better for Citizen .. in that case more beneficial purchase price - output ratio?
Never assume that something can't be done.What does it sound so funny? .. I get to learn and take advice .. if this is the case ..thx
sorry .. between us seemed too much the language barrier .. not to understand that if I use through translatorNever assume that something can't be done.