Airwalker16
Well-Known Member
Bro you act like you never seen my light before.
Because it's 260watts on each 36" bar. It keeps my heatsinks so cool. I could tea bag my nuts on em.
Introducing CobKits.com - specializing in DIY and Citizen COBs
Because it's 260watts on each 36" bar. It keeps my heatsinks so cool. I could tea bag my nuts on em.
Airwalker16
Well-Known Member
Ya hlg-240h-c1750b on both. And apv12-12s for each set of fans.
sixstring2112
Well-Known Member
ask him why he wants to teabag his nuts on his light fixture 
hey @CobKits is there a post in here that shows like how many citi chips will fit on a given driver like the 1818 cob on a mw 185-1050 or 1400ma ? or do we just have to figure all that out. maybe its time you make a chart like supra did for cree and mw but for citi and mw,series wiring please lol
using those common drivers and maybe adding a few of the newer ones out now. giddyup
hey @CobKits is there a post in here that shows like how many citi chips will fit on a given driver like the 1818 cob on a mw 185-1050 or 1400ma ? or do we just have to figure all that out. maybe its time you make a chart like supra did for cree and mw but for citi and mw,series wiring please lol
using those common drivers and maybe adding a few of the newer ones out now. giddyup
Malocan
Well-Known Member
@CobKits
Hello Bobby,
i would like to ask you a question about new vero line.
i saw u allready implementet them to a chart, my question is if this chip (38volt version) BXRC-30E10K0-D-73 @35-37watt
has similar efficiency like a cxb 3590(3500k cd) @ 35watt.
Do you have allready some testings? and i didnt saw them or you didnt released them?
Or do you have some thoughts?
And i wonder, about the new 68volt version of the vero line, how to connect them in series?
Just soldering? If yes is there a limit how many i could connect in series with soldering?
Do this vero chip have a holder?
If you have time and mood, it would be nice if you can answer.
Thanks
Hello Bobby,
i would like to ask you a question about new vero line.
i saw u allready implementet them to a chart, my question is if this chip (38volt version) BXRC-30E10K0-D-73 @35-37watt
has similar efficiency like a cxb 3590(3500k cd) @ 35watt.
Do you have allready some testings? and i didnt saw them or you didnt released them?
Or do you have some thoughts?
And i wonder, about the new 68volt version of the vero line, how to connect them in series?
Just soldering? If yes is there a limit how many i could connect in series with soldering?
Do this vero chip have a holder?
If you have time and mood, it would be nice if you can answer.
Thanks
CobKits
Well-Known Member
great idea, thanks, ill try to get to it next week. never hurts to pokeis there a post in here that shows like how many citi chips will fit on a given driver like the 1818 cob on a mw 185-1050 or 1400ma ? or do we just have to figure all that out. maybe its time you make a chart like supra did for cree and mw but for citi and mw,series wiring please lol
using those common drivers and maybe adding a few of the newer ones out now. giddyup
CobKits
Well-Known Member
that version of vero runs right along in the same range as clu048-1818 both just over CXB3590. it is shown here:
https://www.rollitup.org/t/why-are-cobs-better-and-whats-so-great-about-the-3590.920480/#post-12944216
if you like the vero infrastructure its a good chip and a good alternative to CXB. 4000ks are the only ones out right now if you can find them. another 4-6 weeks thay should have decent availabilty
CobKits
Well-Known Member
the vero chip kinda is a holder.... the chip itself is aluminum and square and the round part of the vero is all plastic. ive always soldered them, its cake, they have HUGE pads that are remote from the chip itself (on the "holder" portion of the chip).
as far as series there are plenty of drivers that can handle it. youre going to run the chips at 500-1050mA in most cases, you'll see the drivers like the hlg320h-c700 have astronomical open circuit voltage values over 400V (be careful!!!!!). thats why my favorites are 50V cobs as they have the best driver options. tons of constant current out there without getting much over 250V (limit of an ideal holder), and then tons of constant voltage options to keep it at a nice safe 50V. new vero 50V might be your go to if thats your flavor
Malocan
Well-Known Member
thanks bobby for taking time
PhotonFUD
Well-Known Member
ask him why he wants to teabag his nuts on his light fixture
hey @CobKits is there a post in here that shows like how many citi chips will fit on a given driver like the 1818 cob on a mw 185-1050 or 1400ma ? or do we just have to figure all that out. maybe its time you make a chart like supra did for cree and mw but for citi and mw,series wiring please lol
View attachment 3788595
using those common drivers and maybe adding a few of the newer ones out now. giddyup
Maybe add a few column to the chart such as PPF, PPFD@<height>
OOPs, just realized it was for drivers, my bad.
CobKits
Well-Known Member
my latest weird project - Massive Passive
heres a simple 3x3 x1/4" block that radiates the heat off of a 10W 1212 at <60C with ease. should look even better on a long 3x3 strip at 6" spacing, or 4 chips/SF on a $10/sf plate to cover the entirety at 40 very efficient watts/SF
heres a simple 3x3 x1/4" block that radiates the heat off of a 10W 1212 at <60C with ease. should look even better on a long 3x3 strip at 6" spacing, or 4 chips/SF on a $10/sf plate to cover the entirety at 40 very efficient watts/SF
PhotonFUD
Well-Known Member
You can also just get it cut to length, 3" wide. Not all that expensive as you point out. Metal supply shops have all kinds of bare aluminum in stock.
Only concern I have is with safety. The exposed bare wire and joints on an aluminum block increase risks. Going to look at ways to reduce that risk.
Have you seen the driverless cob/strips from samsung? They connect right up to 220v. Wonder if something similar will be good for us coming out soon.
Only concern I have is with safety. The exposed bare wire and joints on an aluminum block increase risks. Going to look at ways to reduce that risk.
Have you seen the driverless cob/strips from samsung? They connect right up to 220v. Wonder if something similar will be good for us coming out soon.
CobKits
Well-Known Member
yeah i cut that from a long bar myself, just for testing. if it was in action there would be a BJB on there, this was a straight dissipation test
PhotonFUD
Well-Known Member
no but a link would be cool
Someone posted a link in another thread that I can't seem to find but something like these chinese knockoffs:
http://www.ebay.com/itm/50W-220v-CW-High-power-driverless-chip-integrated-Driver-Dimmable-for-led-flood-/252449817741?rmvSB=true
http://shining-led.en.alibaba.com/product/60454025079-802839135/Epistar_Bridgelux_AC_120V_230V_110v_220v_Driverless_COB_LED_Chip_on_Board_LED_100w_100.html#!
CobKits
Well-Known Member
its inevitable that we will see cob A19s at the big box stores in the next 2 years. we're already seeing them creep into applications such as the construction work lights
http://www.homedepot.com/p/Husky-5-ft-1000-Lumen-LED-Work-Light-JM-WA020T003-1/206268652
of course these are $2 chips. i would buy a bulb for $5 as opposed to a $30 fixture
http://www.homedepot.com/p/Husky-5-ft-1000-Lumen-LED-Work-Light-JM-WA020T003-1/206268652
of course these are $2 chips. i would buy a bulb for $5 as opposed to a $30 fixture
PhotonFUD
Well-Known Member
That is why it is important to keep it at a hobby level. Anyone can already grow good plants with led tech commonly available now.
Maybe instead of recommending DIY or DIY-like to start for a new grower, suggest going with A19s (E27 socket) for the first cycle. Gives them time to research plus the bulbs can be redeployed if they want to go another option.
Maybe instead of recommending DIY or DIY-like to start for a new grower, suggest going with A19s (E27 socket) for the first cycle. Gives them time to research plus the bulbs can be redeployed if they want to go another option.
HydroRed
Well-Known Member
We've all been there...
For about $65 total the power strip,lights & adapters were decent to me @ about 88 lumens per watt (could likely add 8-10% since the diffusers were removed). 108W producing 9600+ lumens total using all 12 plugs and almost no heat. Just wish they had them in higher than 3000K.
Now to start the Citi 1212 builds to replace the current lighting in my 4x4 veg room....
MrTwist1
Well-Known Member
Hey Cobby did you ever order those 3618's? I've got a friend who wants to buy 3618 light engines and the more I think about it the more I think they are gonna be a hot ticket item. Two of them per HLG-320 at 1.4A seems like it should come in somewhere around a dollar per watt, and that is not too shabby right now. I think he's gonna want 4 of them in the near future with aforementioned drivers.