Recent content by Mel_PL

fenix-store
  1. M

    Seoul P7: Cool LED but what am I missing?

    Okay, maybe it's a language issue. I meant that each one of the four dies in P7 should work with its dedicated one-fourth reflector surface. Similar solutions are used in sattelite antennas where the converter is off-axis. Here's my idea: blue = one emitter, one reflector red = four emitters...
  2. M

    Seoul P7: Cool LED but what am I missing?

    IMO the four dies should have four individual reflecting surfaces. I mean that an intersection of 4 parabolic MOP reflectors slightly shifted so that each die is perfectly focused will allow to get rid of the donut hole. I remember someone did such experiments with multiple Cree with good...
  3. M

    Do 2x 17670 fit in a Mag D body?

    2x Solaris 17670 do fit side by side int Mag D. -- M.
  4. M

    P7 O-sink interest

    A pipe? Why not... A short piece of thick-wall Cu pipe inside Mag body (between the top and swich) would give a large contact area to the body (over 40 sq. cm, will transfer heat fast from the slug, and would not accumulate as much heat as a solid piece of metal.
  5. M

    P7 O-sink interest

    1. As thermal transfer depends on area of contact I would suggest soldering the P7 to a large flat copper disk (or disk with a stud/base for P7) and NEXT attaching the disk to aluminum heatsink with an insulator between them. 2. The idea is to get rid of excessive heat, right? But if you use a...
  6. M

    [GUIDE] Mag623 Build w/pics

    I'm sure they don't want to be blind. Even temporarily. -- M.
  7. M

    ostar

    Osram Ostar can be easily fed from nFlex, bFlex, MaxFlex, Shark+Remora, or Shark+pot -- you have multiple levels, full regulation and many other options. AFAIK there are no comaptible drivers for P7 yet (okay, TriFluPic but I'm not sure). -- M.
  8. M

    Help in drive 92*Cree XRE P4 leds.

    Put off 2 LEDs, you got 90 pieces then. Make 30 x 3 in series (each "three" with a resistor) fed from appropriate SLA. It will eat about 30 amps :eek:. If you *must* use 92, the extra 2 can also be fed from the same SLA but with another resistor. Just my idea. -- M.
  9. M

    Multi-level driver for SSC P7 under $8 ?

    It works! -- M.
  10. M

    HouseHold Chemicals for Flashaholics

    Bleach is not an acid. It's hypochloride solution in a basic environment. Others: Hydrogen peroxide - use to flush wounds made by sharp tools. Calaphony and isopropyl alcohol - good to cover PCBs with ultra thin layer before soldering. Sodium hydroxide (caustic soda) - *VERY* strong and...
  11. M

    Can nFlex drive 4 x Cree Q4 at 1A?

    nFlex is not a boost driver; MaxFlex is. Both can drive up to 1200 mA. -- M.
  12. M

    First try at a Quad Cree Mag + Beamshots

    Try these: http://www.cutter.com.au/proddetail.php?prod=cut738 Cheap and good -- M.
  13. M

    First try at a Quad Cree Mag + Beamshots

    AFAIK IMSs reflectors are good for SSC and Luxeon but not for cree (you had to drill the hole to circa 7 mm, didn;t you?). Cree has a different pattern and needs a deeper reflector. You can collimate it correctly but only a small portion of light makes a narrow beam, a lot of light goes away. -- M.
  14. M

    **Great News**Flupic interest thread for Tri-Flupic, Fenix, Arc-Q3, Jil, and Piglets

    Re: Sales and interest thread for Tri-Flupic, Fenix, Arc-Q3, Jil, and Pigl One tri-flupic for me! (I can't see it in the store yet). Edit: ok, it's not Friday, I'm too fast :cool: -- M.
  15. M

    Sold/Expired 3AA, 6AA, 9AA & 12AA battery holders

    I received them a while ago. Thank you! -- M.
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