Recent content by wakibaki

fenix-store
  1. wakibaki

    Zen and the art of flashlight maintenance.

    I like torches. I prefer it when they work. I know a lot of people feel like that, and for some people a flashlight's non-performance can be fatal, although this is thankfully rare. In this respect, I think there's an unhelpful focus on the gadget itself, rather than the user. Many...
  2. wakibaki

    It's a windup

    Just got out of hospital after a haemorrhoidectomy (I like that old English Greek spelling, rather than the newfangled American style) which you may know is anticipated to be an enormous PITA, but thus far happily I haven't had to take any of the painkillers they sent me home with. My wife (!)...
  3. wakibaki

    Why I hate this place and you guys...

    Thanks for the wonderful feedback. I guess I don't feel I'm succeeding if I don't got somebody hating me. w
  4. wakibaki

    "Worlds best Illumintation Tools", Not so far

    This is an all too common phenomenon. Every time it comes up a bunch of Surefire buffs crawl out of the woodwork to defend these torches. Stick with it, the tailswitch is easy to dismantle, stretch the spring, lubricate this, tweak that... ...just what really differentiates this from a $20...
  5. wakibaki

    Regulators, should they get warm?

    There are no other topologies which could be conceivably described as '2 LEDs in series and only one lights up'. And no. Either LED can be dark. w Sometimes I wonder why the world is going to Hell in a handcart. Sometimes I'm absolutely sure I know why.
  6. wakibaki

    Regulators, should they get warm?

    THe only way you can light one LED of 2 in series is if you got a short across one LED. Think about it. w oh, and you wanna be careful who you call a oxymoron, you simile.
  7. wakibaki

    Regulators, should they get warm?

    Warm is cool. w
  8. wakibaki

    driver circuit designs?

    hmmm... Interesting circuit. I see Coilcraft are now specifying their inductors in microfarads. This is a nice little switching device from Linear, LTC3216, good for 500mA, *no inductor*, 2 levels, tailored for 1 lithium rechargeable...
  9. wakibaki

    AAA 350mA Question

    This is only a Watt (1) which any of these battery types will provide for a time. If this is just a constant current circuit, then you need enough voltage to drive the LED + the overhead (dropout voltage). In this case only the rechargeable 10440 will do and the circuit will drop out of...
  10. wakibaki

    Reflector advancements are dead

    Bort Please do not quote high-bandwidth posts for mere sycophantic congratulation. w
  11. wakibaki

    Digital battery meter on your flashlight?

    That's not to say that a simple analog or digital voltmeter wouldn't be useful. I just remembered that there's a circular one built into some NiCd glow-plug starter probes (for radio-control toys). The diameter is probably C cell size as mounted. I think I've got one somewhere, I'll see if I can...
  12. wakibaki

    Digital battery meter on your flashlight?

    This is a very old problem with no really satisfactory solution to date. The problem is that the meter needs to be in the battery, not the torch. The battery needs to talk to the host device through an agreed interface. It has to record the power into and out of the cell. Even then it has...
  13. wakibaki

    Dog leash light

    I use white keyring Fauxtons (22000mCd keyring torch) from DX. They can be locked on, and they run for about 4 hours before I decide I want to replace them. They cost about $0.45 when bought in 50s. You can replace the batteries or just dismantle the old ones for the LEDs. Brilliant. I was going...
  14. wakibaki

    I went on a flashlight buying binge this weekend

    I noticed on the web that B&Q stores in the UK have chainsaws at the moment reduced from UKP 99.99 to UKP 79.99. Let me see... we've got a tree.:whistle: Nice little saw - 33cc, 14" bar. And cheaper than many torches. Managed to get out of the shop without any lights. I just thought about...
  15. wakibaki

    Misapplication of the inverse square law

    Ahhh, this is the astronomical telescope in reverse. Reflectors are parabolas, which are the only curves with a point focus (for incoming plane waves, e.g. from a star). So if you think of your torch as a Newtonian telescope in reverse, then if the source is a point then all the wavefronts...
See more

Latest posts

Top