The emitter look exactly as this Taiwan 3W 380 nm .Wonder if can be pushed a little more around 350 ma with a boost driver from an AA light , 1.5W...hope the pic at that site is correct .The Budgeteer's review say 450 ma 1.75W..
There is a 3W version of it in the tank PD30 365nm, which is basically three such emitters under one dome. The flashlight is three times more expensive than the tank tk-566 at almost 100$ (sans customs).
I think it is a 3W emitter or very close if not. I fed it with the power supply beyond 1A with no apparent harm or swift in the output. Never thought that some day I would need a multimeter with back light, this hobby is very demanding .lol
The issue here is the high Vf of this kind of diodes;
200 ma 3.956 Vcc
500 ma 4.345 Vcc 2.1W
700 ma 4.650 Vcc 3.25W
1000 ma 5 V cc 5W
They are very tricky to drive with one cell , being 18650 or 1.5 ones , there are not standard driver to do it well. The linear don't work because the Vf is way more than nominal 3.7...the bucks don't also .
The stock with take 2 16340 do it because strangely is a voltage regulator working as buck driver , with a bit more than 6V work fine..
Probably will work forever at 3W if well cooled as in a RC-G2 host.
Lets see if those boost can led 700 at 4.35 V with a rechargeable ...i have four differents stocks ones to experiment. I¡m a big fan of one cell powered ones..
PT30... thanks. The $100 price drew my attention. This would have been a steal if Tank hadnt blatantly lied about the nichia emiter. Also thanks for the CPF link. As stated, "The NCSU033B has a single emitter and a four emitter version is available as NC4U133. Nichia doesn't make these UV LEDs in a three emitter version." Thats all I needed to know. It seems that the 365nm version 501 at Kai is still fairly good for the price and for what you get. I had intended this for aircraft engine inspections when looking for oil leaks. The flood beam of a true quad nichia for $100 just sounded to good to be true.
It's also expensive, and from what I see it only has two emitters not three (so I wonder how they can call it 3W...). But it would be interesting to compare the KD drop-in with the 556.
Considering Nichia is reportedly getting $223 for the quad LED and a custom high voltage driver would be needed to complete the build, this might be a good alternative.
I run mine off a 18650. here are some pics I took. it's really had to get accurate representatives since the camera picks up UV. I find that some bills will also show up but not all. The wavelength is too close to visable IMO. I'd like a 365nm emitter, but the good news it the output is pretty good as is. I'd hate to have it driven less.
Sorry about the links, I've never been on a site that used HTML for pics
[IM59-1.jpg[/IMG]