Recent content by Skywise

fenix-store
  1. Skywise

    5mm LEDs for Strip/Tube Lighting

    The link I posted was mostly for informational purposes, not as a seller recommendation or anything. The ones I had were off eBay, which means you're basically buying the cat in the bag, both quality and specs (tho I have to say that quality wise all LEDs I've ever gotten of eBay were good, but...
  2. Skywise

    Seoul P7 at DX

    DX stock indicator means nothing. Most products are collected from the suppliers *after* the order is place.
  3. Skywise

    5mm LEDs for Strip/Tube Lighting

    I use the finest that I had, 220, but I recently played with a PET bottle at the beach and had an idea ... I was going to try how shaking the LEDs in quartz sand works (or to stir the sand with a LED), may be more uniform in scratching it up and alot easier in large numbers. You could try that...
  4. Skywise

    5mm LEDs for Strip/Tube Lighting

    Something I just thought about .. I am not sure how widely those are available and what quality you can get, but I have a few LEDs that have a 140degree angle. The seller called them 'straw hat' and they are at least 1/3 shorter (if not even 1/2) then a normal 5mm LED package, so with the...
  5. Skywise

    5mm LEDs for Strip/Tube Lighting

    Interesting project. The level of 'uniform-ness' will mostly be determined by the actual tube and less the LEDs, but I guess I would go with the widest viewing angle you can find (I think its 140 degrees). I also noticed that all of the LEDs are in parallel - which can cause some issues. You...
  6. Skywise

    What does "Bake a LED" means ????

    Baking is the heating of electronic component to remove moisture, usually from improper or long storage.
  7. Skywise

    5 die 100mA 8mm LEDs - experience?

    Guess I am answering my own post ;) After playing with these LEDs for a while I am reasonably impressed. They are a good color temperature and are quite bright. Obviously not the 80k mcd at 140 degrees (which would translate into over 300 lumen) which was claimed by the ebay seller, but if I...
  8. Skywise

    5mm LEDs - how blue does it get?

    Thanks for the info. I found a supplier that claims a similar narrow spectrum around 450-455nm, will see how those work out.
  9. Skywise

    5 die 100mA 8mm LEDs - experience?

    Howdie, Today I received some 8mm 5 die warm white LEDs which run at 100mA. Since I got them from eBay (80k mcd at 120 degrees! yeah right..) I have limited specs. Does anyone have any experience with such LEDs? How's the lifetime and temperature management? I've also noticed that, while 5...
  10. Skywise

    where to buy large heatsinks...

    Try your local aviation maintenance companies (usually around a major airport). I've been able to get a few nice pieces of aluminum from them that work great as heat sinks. -Sky
  11. Skywise

    To Buy or Not to Buy: 5mm LEDs

    I guess I like the cheap eBay LEDs but I am obviously aware that most of those mcd ratings are "creatively enhanced". I've also noticed quite a few 5 and 8mm LEDs that are supposed to run on 100mA. I assume those are multi-die LEDs ... how do those LEDs hold up in the sense of lifetime and...
  12. Skywise

    5mm LEDs - how blue does it get?

    Just wish they has GS-K1s available in 100 packs for the US...
  13. Skywise

    5mm LEDs - how blue does it get?

    I've never thought about that. Tried it with some old white 5mm LEDs I had floating around and it works quite well. Might get a small container of quartz sand, I bet shaking the LEDs in the sand beats even the sandpaper. Honestly feeling a bit stupid now, I've always been hunting for 120...
  14. Skywise

    5mm LEDs - how blue does it get?

    Thanks for the info. I've seen the old 430nm blue LEDsm but their spectrum is quite wide overall. Any idea if anything with a very narrow 430nm spectrum is available? -Sky Err.. Nevermind on the 430nm availability, Google answered that :)
  15. Skywise

    5mm LEDs - how blue does it get?

    Ok, so I have been on a bit of an LED kick recently, so figured I might find like minded addicts here. I'm a bit done with the high powered LEDs after playing around with some Crees and am currently mostly fascinated with the clean color LEDs produce. I've obtained a 100 455nm blue LEDs but am...
See more

Latest posts

Top