Cree cob build.. help please

AquariusPanta

AquariusPanta

Well-Known Member
indianajones said:
Yes, that driver puts out 1.05A (1050mA ) and can run 4 or 5 vero 18 in series. Each led will draw ~30w because the forward voltage is 29.5v and current is 1.05A.
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Yes, a great driver for running multiple V18s in series!

Regardless of pricing and labor, for the moment, would it be better for the COBs (like 3-4 of em') to be ran with a single driver, such as the one you mentioned, in series or individual drivers running each of the COBs, such as http://gr.mouser.com/ProductDetail/Mean-Well/APC-35-1050/?Mean-Well%2fAPC-35-1050%2f&qs=21bV%2fTPs%252bw%2fczmDCSwIKOQ%3d%3d ?
 
indianajones

indianajones

Well-Known Member
SupraSPL said:
The COBs won't mind either way, but the HLG-185H-C and HLG-120H-C drivers are 93-94% efficient so it will save you a few watts, reducing heat directly.

The driver you linked should work for the Vero18, but it has a low efficiency (84%).
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the 185 driver is 93% when using 110 volt input.
when using 230/277v, the 185 maxes out at ~95%.

120 is is 92% with 110v input, 94% using 230/277
 
indianajones

indianajones

Well-Known Member
SupraSPL said:
I can verify that, I tested the HLG-185H-C1050A at 190.3 Vf to be 93.2% efficient, although there could be some error there because I was relying on a cheap Watt meter on the AC side. But HLG is definitely and example of a driver done right.
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yeah those are the ones i am using to build my commercial fixtures.
if you are ever interested in doing a group buy with me, lemme know.
i talked the jameco folks down to a stupid price on the 185.
 
AquariusPanta

AquariusPanta

Well-Known Member
DonPetro said:
What about the LPC-35-1050?
http://gr.mouser.com/Search/m_ProductDetail.aspx?Mean-Well/LPC-35-1050/&qs=/ha2pyFadui9Sc1OhfMVGc3S/jOAthC1B%2bscBygX7WUuL6uwWfOMuQ==
What is the difference between this and the APC model?
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As far as performance, not much of a difference DonP. There are tiny variations between the two products but nothing significant that I can see from comparing the data sheets.

The physical properties differ greatly though. The APC is more compact and is lighter. It's the reason I chose it for my current lighting setup. An 84% is a B in college. I'm happy with a B for now. In the meantime, I'll work on getting A's.
 
Mandragoras

Mandragoras

Member
ohh.... its so frustrating.... i cannot find any vero 18 that are sold in Europe.... Anyone has found something i did not?
 
Mandragoras

Mandragoras

Member
indianajones said:
Yes, that driver puts out 1.05A (1050mA ) and can run 4 or 5 vero 18 in series. Each led will draw ~30w because the forward voltage is 29.5v and current is 1.05A.
Click to expand...
AquariusPanta said:
How is Mouser and DigiKey with shipping to Yourope?
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you have to pay customs. it usually is a bit more than the price you alkready paid for the items.. For example lets say that my order is 100 euros, i may pay 120-150 at the customs.... it is not cool at all...
 
uzerneims

uzerneims

Well-Known Member
indianajones said:
@stardustsailor could you help this fellow traveler out with a European
source for COBs that don't have to pass through customs?
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@stardustsailor - yep, for me too! i'm looking for 8x pieces of Veros29, instead of CXA3070AB's.
Will do - 2x COB in each cab, four cabs together, some will be larger, so Veros could be driven harder...
Otherwise they all will be driven at 1.4A.
So i really don't know - maybe i should take all CXA's or VEROS :D
Now i'm pretty f'cked up ;D
 
AquariusPanta

AquariusPanta

Well-Known Member
You can't go wrong with either brand or series. I still think there should be a third company that offers similar products at similar costs.

Does Philips sell quality LEDs/COBs? I noticed they had some new products to offer on stevesleds.com, like 12W Philips COBs.

Are there sources in Europe that sell the Cree COBs at affordable prices without the customs tax?
 
Mandragoras

Mandragoras

Member
if for example someone that I know sends a letter to me with these cobs inside and writes gift will I avoid it? if you show to the customs that you did not pay for it, as a letter for example, is it possible to evade this procedure?
 
AquariusPanta

AquariusPanta

Well-Known Member
Mandragoras said:
The language is turned to italian but you still pay the customs as the supplier is at US. THe just have the language of many countries, I think so.... Did you see that the have a European warehouse?
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Try calling them and telling them about your situation. Who knows, maybe they will cut the customs, if any, if you tell them that you will be investing into their 'cause' in the future.

I'll be ordering from DigiKey.com from here on out most likely, as they got the supplier's craft down.
 
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