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the constant current driver gives 1.4A to each cob on the string.each cob is at a surten voltage at 1.4A (hopefully uniform) the voltage on the string will be the some of the voltage each cob consume at 1.4 A when wired in series ,at your case 343v~ as @DrBlaze said. if you had 9 cobs on the...

thank's its good to know the 480h-c1.4 is good for 10 cxb's, its not obvios ,i guess it has to do with the high open voltage as @wietefras said.and i guess your right about water cooling as well,2 degrees is not a problem with constant current driver,maybe with cv drivers it can be more of a...

do you use some kind of silicon to seal the lenses? they have some openings in them.i use them as well they are good lenses:bigjoint:

hi there im realy imprest with your light and the amaunt of effort that you put in to it , super diy with the car radiator, owsem. However ,i do want to point some flaws in the disign ,no offence . 1)you use hi voltage drivers(343volts) but the component are not rated for it ideal chip lock-250v...

i on the other hand wold keep it at 1.75 or even less for efficiency just add more diodes to the string to fill the driver voltage (183 v). when you run them at 2.1 amps there175ma per diode and if you use the A version meanwell that put more amps(2.369) your diodes are 0.197A which is very...

Looks like they are made to fit the ledil florenc? Do you use the original ledil clamp to fasten the lens? Or am i wrong and these are different optics? looks awesome , the cnc machine worked extra time on those sinks thank's

Any dc on/off switch will do. something like this: https://www.amazon.com/uxcell-Position-Rocker-Switch-Listed/dp/B071NFKNXK/ref=sr_1_8?s=automotive&ie=UTF8&qid=1505252372&sr=1-8&keywords=on+off+dc+switch you can use any switch becaus the dimming leads carry only 10 volts ,so any switch will...

if you want more power from the driver you can have the dimming Leeds open like you did before.also can install a switch on them,and when the switch connect the leads you'll have dimming capabilities ,and when switch disconect the leads you'll have full power from the driver. You most very...

Yes,everything is ok with board driver and current. You just measure the ac input and not the dc output. You need a multymeter to check the dc output ,you cannot do it with a kill a watt. But you don't realy have to measure ,it's ok ,and the numbers add up nice. When your driver set to max you...

great info what is the calculation and where is the data from if i may ask(i don't remember this from data sheet) thank's :peace::peace::peace:

Board looks great. Can i ask who made it or is this confidential? Are you going commercial or is it just for you? thank's :peace::peace::peace:

when you max the current(amps) on your driver you get 3 volts per diode in the string of 56 =169volts *1.75 A =294 watts on dc side(board side) so i guess you have 120 volts in american plug (i was mistaken before) so 120v*2.7A=324watts on the ac side(plug) and 294 watts on dc side (this is on...

hi there How do you check the amps? Pleas correct me if im wrong. are you using a "kill a watt" ? if you do it make sens ,2.7 amps at 110v(i guess your in the us) is 297 watts(2.7*110=297) it seams you measure the ac side and not dc side,1.8*110=198watts The numbers seems to fit the ac side with...

Maybe the ceramic has a role in electric insulation between the cob and sink for safety purpus ? Is copper to expensive to use? If so than silver gold and diamond are out of consideration.maybe zircon ? :lol: The 1 mm copper pcb(f strips) at 0.0583 is getting to 50c and both sides of the pcb...

Does aluminum conduct heat better than the ceramic package ?

Thank's mark for your replay and for your cool temps :hump: It allways come to real life test,its good to know that ,thanks',and I agree abut simetric footprint,better for easy design and light spread . i have not seen AY bin anywhere as well.. yet cheers

The reflector looks great man. I dident know it was active cooling ,so it does make it better but I wold still use the thermal epoxi,its very easy and will take abut 10 minutes for both kits.these cobs are expensive and worth the extra effort to keep them cool,and get longer life time and a bit...

hi mark Are these the diodes? http://www.nichia.co.jp/en/product/led_product_data.html?type='NFSW757G-V2' it appears they are 34.1 lumens at 3000k 80cri 65ma 2.84v .............................36.9 lumens at 5000k ets. so...... ....35.5 lumens at 3000k 80cri 65ma 2.85v for...

hi there I hate being mister safety again but the + on your middle cob looks dangerous. When I look at the full size picture it appears you have a 2-4 mm wire part with no insulation that is prone to touch the sink. if it does your light will be a shocker :mrgreen:.Maybe its just the pic and im...

They might melt at some long usage i guess. personally,i wold not take the chance,it's the easiest job and wago go to 300v+ probably,very easy to use,cheap and will provide a much more solid contact than these dc plugs.(the chance of loosing the light or your house in the extreme case is not...