Receive in two weeks, pretty good timing nowadays..
As the 501B host is over-reviewed the only thing to note is that came with coated lens , all fine, orings , lubed , finish etc... nice first P60 host to play with plenty of spare things around here. Busy weekend at sight.
The dropin look very well made and assembled with the emitter glued onto the pill.
As the pic show has OP reflector .The other is an empty received yesterday aimed at pill for a Mini Maglite Match's easy mod.
Draw 240 ma from an 18650 , that's a bit less than 1W , 800-750mW at the emitter.
Emitter close up..
Below a pic from the 395-400 nm emitter also sell at KD. This one is on a C78 zoom to throw which is perfect and the same host is waited for the 365 one.The stock drivers 1.2V AA powered of those is perfect for this emitter also the heat dissipation could be enough with little to adjust.
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]