Been awhile I’ve been out of it, and I need to get this build done for a customer.
Based on this star and matching optics:
So, 20MM head, going to need to be at least 12V and a minimum 500mA, 700 would be better.
Maybe something like an old 9P clone or something along those lines running 3 18350?
Maybe a boost driver like for an XHP50/-70, only tweak it for less current than usual?
Then you can run off a single cell.
You could use Shark as a driver
One level only set by trimpot.
At 700mA you can drive this triple you linked from one Li-Ion, 2 would be perfect.
With right drop-in (assuming low profile lens for this triple) Shark will fit into P60 head.
I guess it will be a flashlight? It would be so much easier to have the leds on a parallel board instead of in series. You could use the cheapest simplest lineair driver with 2x 7135 chips for a fully regulated 700mA.
Indeed that would make it easier. Though forward voltage might be an issue. But that would be true in a series configuration also.
Perhaps they can offer it to me that way.
Or alternatively anyone know of a parallel board that might fit this footprint I can resweat them?
Is intl outdoor still around?
Intl-outdoor is still around, although they have not listed new items for about a year now. A triple Noctigon should fit fine as the optics is the standard Carclo triple.
Will the carclo optics work with uv? I thought they would yellow when used with uv. If they can, this is good news for me:)
maybe this isn’t the combination to use then.
Suggestions for uv or near uv power houses?
I don’t really care about the 365 NM setups with filters to remove longer wavelengths.
I have never found a spectral transmission graph of the plastic that Carclo uses but most likely it transmits light down to about 400nm. So these leds are on the edge of what is transmitted.
Just checked it for you with a 395-310nm flashlight, you will be alright, the transmission of the Carclo optic is good at these wavelengths (but not al 365nm!).
(the shadows that you see is light reflected away, not absorbed, you can see that it transmits through the flat bits of the optic)
It should be simple enough to remove the 0 ohm resistors and rewire this for parallel. Hmm.
Djozz, Thanks for checking!
You’re totally right, I didn’t saw they were 0 ohm résistors !
OP, your problem is resolved, just use whatever 7135 based driver you want !