Nitecore EX10 UV

CM

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Just finished this:

DSC_5691crop.jpg


Beam shot:

DSC_5686.jpg


Cree 7090 UV. about 395nm. I can sense the scorpions outside trembling :naughty:

That's all Folks! :D
 

CM

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Ooh, I like! :twothumbs

Hey darkzero, your post on dissecting this thing was the inspiration for the mod, so thanks goes to you for posting that. I had to give an arm and a leg to get just two pieces of these Cree UV's but the result is very worth the effort.
 

CM

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Looks gorgeous! Where did you get the Cree UV LEDs?

A fellow I know from AR15.com who has a small stash of the parts. I'm going to see if he's willing to part with a few more. I think I'm going to make a second one.

I really like the way this came out. It's now dark here and I just spotted a scorpion from about 20ft away with this set probably 75% of maximum. The sucker just stood out like a lighthouse. Unfortunately, it ran into the crack in the concrete block before I could squash it.
 
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dixemon

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Thats pretty sweet!. Im still waiting for someone to make a light that is dual purpose such as the RA Twisty. I can see the red emitter being UV, BL, GR ect... Now that would be a great mulitipurpouse light. Club bouncers, ect..

Cool light, thanks for sharing.
 

CM

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Cree has UV leds? wow....i need a P60 version of that...

Crenshaw

They're almost impossible to get. The data sheet I have says:

"This is an unreleased product with no release date scheduled..." with a copyright of 2006. There is no mention of these parts on Cree's website. Too bad because they and Nichia are the only UV parts that I would trust. The Nichia's high power ones are also almost unobtanium with prices in the stratosphere.
 

darkzero

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Um, did you know that the Shoppe has UV Crees mounted on boards? 27 in stock as of right now. I've had my eye on them for a long time. http://theledguy.chainreactionweb.com/product_info.php?cPath=48_52_79&products_id=673

I'm assuming these are the ones that are used in the UV A19s. If they are the description states that they are 7090, wavelength 390-410nm, flux 200mw @ 350ma.

But please don't buy them all up. I need one too.
 

MorpheusT1

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Great work CM :)


Hmm.. i need to get me one of those emitters too.
Let me know if you make a order Will.



:wave:
Benny
 

darkzero

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Great work CM :)


Hmm.. i need to get me one of those emitters too.
Let me know if you make a order Will.



:wave:
Benny

I do need to place an order soon for some parts so I'll pick some up. I'll email you.

BTW, thanks to chimo I was able to increase the current on this board. I thought stock current was 500ma but it's not even that. I'll post details in my other thread.
 

CM

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Um, did you know that the Shoppe has UV Crees mounted on boards? 27 in stock as of right now. I've had my eye on them for a long time. http://theledguy.chainreactionweb.com/product_info.php?cPath=48_52_79&products_id=673

I'm assuming these are the ones that are used in the UV A19s. If they are the description states that they are 7090, wavelength 390-410nm, flux 200mw @ 350ma.

But please don't buy them all up. I need one too.

Thanks, are those 7090's? That's a good price.
 

CM

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...BTW, thanks to chimo I was able to increase the current on this board. I thought stock current was 500ma but it's not even that. I'll post details in my other thread.

It's the 0.15 ohm resistor that sets the current ;) I already figured that out. However, the stock bias is where *I* would like mine to be set. However, I realize there are those that want balls to the walls and the 0.15 ohm resistor needs to be decreased to say 0.1 ohms or so.
 

darkzero

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It's the 0.15 ohm resistor that sets the current ;) I already figured that out.

Yes that was a given. I'm not electronics expert so I had to ask to figure out how to calculate what I wanted to drive it at. I don't like to just throw a resistor on there & experiment.

Chimo told me what to measure & the formula to use. According to what he told me I calculated stock current max to be .313333. That's pretty spot on cause I measured .314ma at the emitter.

What did you set yours too? I originally wanted to go higher than 500ma but I don't think it's a good idea due to lack of heatsinking.
 

CM

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Yes that was a given. I'm not electronics expert so I had to ask to figure out how to calculate what I wanted to drive it at. I don't like to just throw a resistor on there & experiment.

Chimo told me what to measure & the formula to use. According to what he told me I calculated stock current max to be .313333. That's pretty spot on cause I measured .314ma at the emitter.

What did you set yours too? I originally wanted to go higher than 500ma but I don't think it's a good idea due to lack of heatsinking.

I'm set to stock. I have some 0.1 ohm resistors that I've been thinking of installing but I like the runtime with stock resistor. I agree that anything above 500mA is a good idea due to heat. Even with an unmodified light, the head gets very hot when I did a runtime test with mine. I've actually contemplated going lower (say 0.2 ohms) for even longer runtime since I have other lights that are "scorchers" already. However, the fact that this is dimmable lends support to making the resistor smaller. One can always drop to a lower level. Decisions decisions.
 

darkzero

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Good point. A .10 resistor should give you just under 450ma. I bumped mine up to just over 500ma. Before I rarely ever used anythin other than high. Now & with a R2 with better tint I find myself using the lower levels more.

Waaa? You sold the light already? Knowing Benny it was probably him. :wave:
 

CM

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Good point. A .10 resistor should give you just under 450ma. I bumped mine up to just over 500ma. Before I rarely ever used anythin other than high. Now & with a R2 with better tint I find myself using the lower levels more.

Waaa? You sold the light already? Knowing Benny it was probably him. :wave:

I regret modding other lights with the two R2's I've got. I need to get some R2's with a warmer tint and pick up another EX10 to mod. But my busted thumb is getting painful with the last few mods I've done so I need to take a break for the rest of the day :D
 

darkzero

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I regret modding other lights with the two R2's I've got. I need to get some R2's with a warmer tint and pick up another EX10 to mod. But my busted thumb is getting painful with the last few mods I've done so I need to take a break for the rest of the day :D


The stock Q5 WC was way too cool for my tastes & I'm someone who doesn't mind cool tints. I threw a R2 WG on it, it was nice warmer tint but that fact that I could notice green sometimes really bothered me. I know it's all in my head but still. Then I threw a R2 WC on it. This WC was a lot better than the Q5 WC it had. I like it now.

Sorry to hear about your thumb. Hope it gets better soon.
 
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