You won’t get 2 Amperes through the SST on a single cell.
You are correct of course, and at the 1A per led that you will be able to run the triple direct drive on a single cell, the lifetime expectancy should be good.
The output should still be impressive though, at more than 3W radiation OTF.
Whoa professor Djozz. That’s a great DIY way to measure the UV. Salute! I thank you for doing this. I can imagine the joy you had doing it.
As for the 233B. Yes that’s just samples I got for PCB footprint testing. Please ignore the output.
- Clemence
Correct :party: , designing test methods is way more fun than continuing doing tests on new leds once the method is settled, but I will try to measure a new UV led every now and then.
But is there a triple optic that will work with UV?
I got information Simon is using a LG UV LED in next Convoy UV batches, as the SST-10 UV 365nm are more expensive at same performance
it is listed with 1360mW@0.7A
and drive current on the G1performance group is 700mA und the H1 1500mA max. he got the one that’s only 0.7A, but I think it will run fine at 1.5A
https://www.lasercomponents.com/fileadmin/user_upload/home/Datasheets/lg/lg_uv_led_overview.pdf
^ Cool! I have been trying to find that led for sale for 2 years now, but I can’t find it in small quantities with normal shipping costs. I even emailed lasercomponents.com because they are distributor of LG UV leds, but had no luck getting samples from them.
ask Simon from Convoy for a test sample
Good idea!
No need, he already lists the led for sale. But his picture is an older generation of LG UV-leds than I thought it would be. Still cool to test but not the latest and greatest.
At least he has 2. best flux bin and 3. lowest voltage bin
960-1060mW @500mA is impressive
Djozz, this is a great thread! I applaud your efforts to find a repeatable measurement method. :+1:
Simon asked me for your shipping address to send you a free smaple djozz
this host with triple UV led and a DD driver will outperforming many high-end UV flashlight, i guess
Yes, could be a perfect combination, but the large diameter filter glass (ZWB2) is difficult to purchase.
Nice work, djozz. Would you care to update this thread by testing the LG UV-A 365 nm? I’d like to see it fare against the 365 nm UV LEDs in your test. I’m sure it will not top the Luminus SST-10, but I think it will beat the two Nichias. I’m not sure about the LiteON. I have the LG UV-A and I’m using it. The visible stray light of the LG is tolerable, maybe not as bad as the LiteON. I’m curious to see if getting the SST-10 is worth the extra price.
I have one of those LG leds in house to test but I’m waiting for the Seoel Semiconductors version from Kaidomain that is stuck in the mail somewhere, to do a test of both.
Yes, the one from Seoel Viosys, too. The CUN66A1A. I’m curious to see both of them in your test.
The SST-10 has no white wastelight and pretty few violett visible light, so an UV filter is not really nessesary
Have you considered using a diffraction grating to measure the output at a desired wavelength? All you would need is a slit at the calculated angle, and your detector behind it. You wouldn’t need all that filter stuff.