Klarus        
Results 1 to 3 of 3

Thread: Question about connecting Luxeon LEDs in flashlights?

  1. #1
    Flashaholic*
    Join Date
    Dec 2005
    Location
    socal
    Posts
    1,901

    Default Question about connecting Luxeon LEDs in flashlights?

    Pardon the ignorance of a newbie: All the Luxeon LEDs (I, III, and K2) state not to connect the slug to either anode or cathode. I'm under the impression that most flashlights use the body as both the negative contact and as a heatsink (which is attached to the slug). Aren't most Lux's slugs epoxied to an aluminum heatsink which is then screwed into the body of the light using the body to pull heat away from the aluminum heatsink and the Lux? If this is the case, isn't the slug and the cathode electrically connected via the body of the light and not isolated?
    Or is my understanding completely off?

    Thanks.
    Streamlight: TL-3 Xenon, Vital Stream Scorpion-FB1, Scorpion LED SSC P4, KeyMate Silver (Nichia CS)
    Nuwai: 2x QIII TWOH (Green and Titanium), TM-313X Ti (QV1J DD 14500)
    Surefire: M2+C2-HA+Detonator, E2D, VG FB1+EXe, VG FB3+E2C+C2
    Vital Gear F2, Huntlight FT01, Jetbeam Jet1 AA and 123A, Fenix E1 (Silver), Luxogen LR5A-3W & LR12 CR2 (SCC P4), Spiderfire LR8, NexTorch Z1, Gerber Infinity Ultra (2x Green), Dae's UV 12LED
    Emergency Kit & Knives Pics - Lights & Knives Pics - Small Knife/Lights

  2. #2
    Flashaholic* cratz2's Avatar
    Join Date
    Apr 2003
    Location
    Central IN
    Posts
    3,942

    Default Re: Question about connecting Luxeon LEDs in flashlights?

    There's been some talk of this lately... the general practice when building a Magmod is just to put it on the heatsink using some generally non-conudctive thermal epoxy such as Arctic Alumina. I've probably done 15 of these builds and as far as I know, they're all still going strong.

    Now, the red, the red/orange and the amber Luxes have a positive ground so extra caution needs to be exercised with those.

    What light are you thinking of modding?
    "That's what makes SF so badass... we've got the best flashlights."

  3. #3
    Flashaholic*
    Join Date
    Dec 2005
    Location
    socal
    Posts
    1,901

    Default Re: Question about connecting Luxeon LEDs in flashlights?

    I'm looking to modify a TM-313X, a TM-310H, and possibly one of those rechargable V2 lights that UnknownVT reviewed. This is also a general question so I have a better understanding.
    I recall reading often, especially in the custom forum, where people touted their lights to have a heatsink with a lot of thread engagement to the body for max thermal transfer. If that's the case, then the slug of the Lux is connected to the heatsink which is connected to the body which is connected to cathode of the Lux and thus not isolated. Is this the case?...or am I missing something?
    Thanks.
    Streamlight: TL-3 Xenon, Vital Stream Scorpion-FB1, Scorpion LED SSC P4, KeyMate Silver (Nichia CS)
    Nuwai: 2x QIII TWOH (Green and Titanium), TM-313X Ti (QV1J DD 14500)
    Surefire: M2+C2-HA+Detonator, E2D, VG FB1+EXe, VG FB3+E2C+C2
    Vital Gear F2, Huntlight FT01, Jetbeam Jet1 AA and 123A, Fenix E1 (Silver), Luxogen LR5A-3W & LR12 CR2 (SCC P4), Spiderfire LR8, NexTorch Z1, Gerber Infinity Ultra (2x Green), Dae's UV 12LED
    Emergency Kit & Knives Pics - Lights & Knives Pics - Small Knife/Lights

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •