Recent content by NextLight

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    Prices of quality 18650 have dropped

    May I inquire, from which vendor did you receive those cells for $7? (I see 200+ listings on the 'Bay, half are clearly NOT "authentic Panasonic 18650", half of what's left are questionable, IMO.) TIA
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    LED filament bulbs a market failure?

    Beyond the decorative market, I had hoped these might be a potential solution to the problems of many home and office LEDs' (color spectrum related) negative impacts on human health, especially to deterioration in the retina, mood, and circadian (sleep) cycles. I am exploring a few of these...
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    * Resolved *Cheers to Lumens Factory

    Re: Jeers to Lumens Factory Prime77 I also bought an E1-LED module by Lumens Factory last month. IMO, it is really designed for use on a LiFePO4 rechargeable (3.0-3.7V). My E1-LED module works fine (I am using an E2 body with a single protected 17670 Li-Ion) but there are a couple of...
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    Surefire Saint headlamp? (Part 2)

    The good news: My new Minimus works fine on "3V" RCR123As http://www.lighthound.com/3-Volt-RCR123a-Unprotected-Battery_p_30.htm Mine has now completed over 200 hours of testing. (about 14 battery cycles) The bad news: On the lowest setting, the light continues to run until the cell reaches...
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    Best light for Police patrol use?

    Second vote for the Z2 with Malkoff M60 drop-in. Same ergonomics, similar battery life, more light. The Malkoff tends to be more reliable than many non-Surefire LED modules, and it has great output and beam quality. I noticed you also asked (elsewhere) about the Gladius Maximus. The Gladius has...
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    Diode to reduce voltage - questions...

    A silicon diode (1N4001 or similar) will drop about 0.7V. It is not EXACTLY constant, stable, or linear, but it is pretty close at near zero to modest currents. It will drop a 4.25V maxed out LiIon to about 3.55V, with light or no load. With a 1A maximum load, the diode might drop 0.9V, plus you...
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    Non-round beam SF M3

    It is 'normal' for M3s. I personally like the oval pattern, as it is useful for walkways & roads windows, rooms, and even blinding BG's eyes up close (when horizontal) If it were so bad as be be hourglass shape where I could actually see the filament windings in the beam's hot spot, that would...
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    Reccomend Most efficient CFL for power outage

    CFLs are fine energy savers... when line operated. Though LEDs may be even more efficient, reliable AND efficient 120V LED bulbs are usually expensive. I would NOT count on a lot CFLs for backup lighting on small solar, small generators, and/or cheap inverters. Many cheap CFLs have a very low...
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    Multimeter specifications: what does "counts" mean?

    A 'count' in an accuracy spec is "1" in the least significant digit. So if we put ~ 1.950000 V into a 3.5 digit DMM (a "2000 count" meter) on the 2 Volt scale and the DMM shows 1.955V, that demonstrates a 5 count error. In this example, the meter might be 0.1 % basic DC accuracy (mostly...
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    What impedance in an L91 lithium AA?

    I did a test like this 2 years ago. My results were nearly identical. (Not all NiMH are alike...some I like...some I don't.) With respect to all (Especially Silverfox who has far more data) I find the internal resistance of Energizer L91s to be non-linear (based on load x time, and cell temp)...
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    There is truth behind "two = one, one = none"

    A polite light A fight light A backup light One light can sometimes fulfill two roles (depending on its feature set) but never all three, lest "one becomes none."
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    Approved Family of Flashlights (FoF) Program List

    From: http://soldiersystems.net/2009/04/22/us-army-family-of-flashlights/ (I find soldiersystems.net a useful source of announcements about individual soldier hardware. NextLight) US Army Family of Flashlights 22 April 2009 US Army’s PEO-Soldier has updated the Approved...
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    Large Hadron Collider goes online tonite!

    So does raising a child. My Nephew wants to push the big blue button...
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    Thoughts on the E1B.

    If one light met all of our needs we wouldn't own more than two (that is, per person, in the enlarged family, plus one in each room and vehicle) nor would we need a forum. The E1B is a great contribution to the SureFire family IMO, but the bezel, clip, switch, battery limitation, etc is less...
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