LED soldering doesn't look so good at the pictures, and the LED's dome show some blemishes, so I hope the pictures are not representing for the entire batch.
I cant make out what LED's they are, looks like U3 or U4 XM-L?
It doesn't look very much like a MC-E
Not sure why it says T5, maybe they have the pictures or description mixed up.
Cree's datasheet says XM-L EZW is available in WW (3000K / 2700K) in bin T5, so the title may be accurate. The voltage and current seem way off, though.
It doesn`t look like a Cree XML on the photo it looks like some sort of a p7 .
Ah I see, I was actually talking to okwchin about similar ones from cutter today.
They are optimized for 6-12 volt, I was interested until I found that out. (Just read after writing that they come in 6 and 12 volt versions)
I think a 6 volt one would go nicely with 2 CR123's, but I don't see much info around the net with anyone using them.
I'd like to see someone show what they are capable of.
It's a different kind of XML, but still an XML. Its a Cree EZW (EZ White) XM-L. It's not designed for flashlight use, but for LED light fixtures. They have 2 vF options 6v and 12v. It is NOT a ~3vF emitter like a normal flashlight XML.
has anyone purchased from goodluckbuy?
i'm about to order 4 of these
I've never used them before but while poking around just now I did find a 100mm Aspherical lens that looks kick-ass! I wonder what host could fit such a beast? 8)
I searched glass lens and looked at each. If this order goes through I'll try a couple - maybe that one. I think DX has 99mm (w/ bad reviews). Might be the same...
anyway, if these really are WW EZW, this could be the deal of the year for me - I'll order like 20, or more - literally.
I've bought from them several times, and was satisfied every time. If items were missing or something was wrong with the order they responded promptly with excellent service (instant refund in one case, instant resend in another).
You can read about my experience with them here: https://budgetlightforum.com/t/-/197#comment-37855 (where other people report worse luck than mine), and here: https://budgetlightforum.com/t/-/7395#comment-145227 .
Only thing to notice: they don't respond to the contact form in their site or to MSN messenger / skype. You should use their email: firstname.lastname@example.org, to which they respond promptly.
well this one looks very strange ... some kind of chinese XM-L :)
there are no any word what its xml except picture...
Its a very legit emitter picture, but the details seem off... EZ white XM-Ls are 6 or 12 V optimised. Essentially its liek 4x XP-Gs sitting under the same dome, wired in series (12V) or wired as 2 serial pairs (6v). Unless you have a reason to use higher voltages and have drivers to match, there is no advantage in using these. Your beam in a flashlight application will also be compromised as you will be projecting 4 dies with a dark center in your hotspot, especially in SMO and aspheric applications.
My recommendation is to give these a miss, unles you know what your doing and are willing to give these a go.
yes, they're primarily for higher voltage - and since my boat, truck and camper all have 12V systems, and these are ridiculously cheap, I'll be giving them a BIG go (if they are what's pictured...)
and as far as a dark center in your hotspot........huh?? if you use a focused ashperic, yes, but a reflector? i think not. see MC-E beamshots...
dark? no, not as bright, i suppose. matter of taste, i guess
dthrckt, what do you intend to do for these as far as a driver goes? I have a project idea (perhaps ridiculous) which will be powered by a 12v battery. Would you use a driver? Some sort of resistor in-line? Modes or single-mode?
high end super throwy SMO reflectors can, but no where near as bad as aspherics, yes your right.
For 12V based systems, this is a great emitter option
Should be able to find some drivers that will happy work 4 emitters in series and safe to 15V. Im thinking drivers for downlight type applications might be a good start.
A whole bunch in parallel w/ resistor - fog lights for my truck, flood lights for my boat and interior lighting for my camper (has 120VAC and 12V wiring, and generator outputs both). Since the power source is essentially unlimited, I'm not bothered by the inefficiency of a resistor setup.
Well...there's no alternator or generator on my outboard...but the battery is 125aH (over 80% of that is usable...)
I'm also curious about trying one of these in a box store variety 12V halogen spotlight. There must be drivers out there for MC-E...I don't know much about them...yet.
None of these emitters None of them were ever designed for flashlights some of them happen to work well in them by chance.
I would love to try one of these 12volt XMLs direct drive with 2 18650s and see if it didn't burn up. Then the problem is finding a driver with modes.
Converting from 110AC to 12VDC is easy so these would be great for in house fixtures. Seeing these really makes me want to experiment with some nightlights or something similar.
Ok, I would need help with my setup and figuring out what size/type of resistor to use or what drivers might be appropriate. My project consists of replacing my riding lawnmower's headlights with 2 XM-L's. I'd like at least hi/lo mode, but I could do without.
These are perfect for that. There are led calulators if you good that - they'll tell you what resistor to use. I assume your mower has an alternator (ie you don't charge the battery manually). I think there are 6 and 12V mowers? not sure. I push.
You could do Hi/Lo w/ a multi position switch (very cheap at radioshack) and two different resistors.
Personally, I'd add the XM-Ls w/ their own housing/reflector elsewhere, instead of inside the stock light housing. That way you don't mod the factory (reliable) system - and you actually add additional capacity. Just wire right from the battery and include a fuse/relay/switch.
The pic appears to be of the batch that had one of the dies slightly off-center.
This was discussed over on the other side, as it was an uglier beam than the MC-E, when placed behind an aspheric.