Since i started testing with approximately 42 hours the generic uv led test fixture fell over on to a strip of foam that borders the glass surface it's on , melted some foam and created a hot spot and then, the out lens did melt, so i removed the cheap acrylic dome and have it back into testing, the LED Engin is still running happily with nearly no luminace loss in either uv diodes. the generic is just that a a low cost item, i think they would be good in a uv flash light or in an enclosed luminary, the optics need to be kept clean or the heat of contamination my cause dark spots that then just melt the plastic dome.
Now i do have a question, does any one know of a supplier for these little domes, preferably made from glass with the same diameter of about 5mm? so i can protect the die from air? the generic has a type of what i could only guess a silicone type goo on the inside to keep air away from the uv led die it's self?
one other thing that popped into my reptilian noodle that i have is with the power density of these devices and close up i would not recommend looking at the source for any length of time, in my tests i have the led's behind me, even though it is UVA i have gotten that sand in the eye feeling that i got a bit too much uv, but that was close to the emitter and these have a wide radiation pattern so people a few feet away i dont think there would be risk,
I have been moving stuff around in my lair and misplaced my camera tripod so i will have pic in the future, but for use outside at an event with lots of florescent paint or clothing around i can see these being viable for hiding them in different areas for different effects and the LED Engin would fit the bill for that and use the generic uv diodes in more of a portable flash light as long as the optics are kept clean.
as stated i am using an older driver made for the luxeon series of leds and uses a buck regulator and runs in the lower khz range and some times is audible as a slight hiss and these where engineered to be used on lead acid batteries as they have a low power shutdown via a jumper setting, other wise they will run on lower voltages.
These drives i have use an MC34063 switching regulator ic. I have one more coming and next month may be another, mainly that i feel once there stock is sold out i doubt they will order more. i know there are small drivers available but i do like these more and the only part that is hand made is the main inductor and that's easy to wind
Last edited by Draco; 05-12-2016 at 23:46.
Reason: addaed more info
Remember Remember The 8th of November, When No One Stood, but Kneel, In Surrender
In a popular government when the laws have ceased to be executed, as this can come only from the corruption of the republic, the state is already lost. Montesquieu