Recent content by li_gangyi

fenix-store
  1. L

    Volatge Drop of Paralleled AMC7135 chips?

    It'll just stay at Vf+0.15 = xV. The dropout for parallel regulators stays the same.
  2. L

    Volatge Drop of Paralleled AMC7135 chips?

    It should be the same, but the dropout does change with current passing through, so the more you have in parallel, the less of a drop out for the same given load. However it's not free lunch though, the quiescent current stacks up with each additional regulator (the amount of current the...
  3. L

    My xm-l p60 flickers in my WF-502b with a certain battery

    Good to hear you've got it fixed.
  4. L

    My xm-l p60 flickers in my WF-502b with a certain battery

    Is it flickering when the battery voltage drops too low or does it flicker sometimes even when the battery is close to fully charged?
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    Desperatly looking for driver (updated kennan driver?)

    A little OT, does anyone know offhand if someone makes a multimode driver that uses the AX2002? Or is that gonna be a custom DIY deal?
  6. L

    Desperatly looking for driver (updated kennan driver?)

    If there's any sorta of demand for these AX2003 ICs, I could get a friend to source for them.
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    18650 charger with AW RCR123

    The 1A charge rate will most probably not be suitable for your RCR123s, unfortunately.
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    Fake Ultrafire 18650 battery warning

    As the voltage drops, the current will have to increase to supply the same net power to the LEDs. The LED driver takes care of that till the voltage is below what it can work with and then your light finally goes out. I'm guessing it's some kinda coincidence, seriously doubt a bad battery can...
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    New one- hi amp light on low vs lo amp light on hi

    1. It's not quite so linear, you have LED efficacy thrown into the fray, as well as human perceived brightness. There was a whole thread dedicated to this. Look here. http://www.candlepowerforums.com/vb/showthread.php?179765-LED-perceived-brightness-and-efficiency-linear-vs.-PWM-control 2. Not...
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    Japanese or USA made 17670

    I'd think a magnet/button held central with a piece of machined plastic would be pretty safe.
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    That little irritating cardboard insulator on that AA of mine

    Are you prying out batteries using something metallic? That is the only way I can imagine the insulator getting damaged.
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