Search results for query: *

  • Users: WetHobo
  • Content: Threads
  • Order by date
  1. W

    Lithium ion "C"?

    Lithium ion \"C\"? Is there such a thing as a "C" size lithium ion cell?
  2. W

    Are certain colors of LEDs more efficient?

    Just wondering, are certain colors of LEDs more efficient than others? Does one offer more lumens per watt? If so which color is the most efficient?
  3. W

    O-sinks - what mods necessary?

    I'm hoping to order an o-sink whenever they're available for the D cell mags. Is the only mod necessary of the mag to cut down the reflector? What exactly needs to be done to it? Also, is there room inside my 3D to put a 5 watt resistor, without modifying the switch?
  4. W

    Bringing back NiMh from the dead.

    I have battery pack with 8 NiMh AA batteries that has been laying around for quite a while. It's only 1200mah, so obviously it is pretty old. It's been sitting so long all the batteries read 0.00v. I want to try and charge it up. What's the best way to do it? Would it be better to seperate them...
  5. W

    Constant current NiMh charging

    I'm building a light that will use a 6AA NiMh batteries in series. I want to be able to charge the batteries without taking them out of the light, so I will need to make my own charger. I'm thinking simple constant current - something like an LM317. First question: Can I do that? Just simply...
  6. W

    Easy way to boost voltage?

    I have a power supply that is putting out about 11.5v @ 9 amps. I need about 14v @ 2 amps. Is there an easy way for me to get this? Maybe just a coil of wire or something? It doesn't need to be efficient, or small. Only easy.
  7. W

    Cell phone light...6 volts ok??

    I've got an old cell phone with no service that I'm going to install a luxeon on. Why? It will be a GREAT emergency light...as 911 still works on the cell phone. Anyway, the battery on this phone is dead. I ripped it open, and inside was simply 4 NiMh AA batteries. I would like to replace them...
  8. W

    Easy step up circuits

    Hello everyone. I recently purchased a couple of those solar yard lights to play with. They come with 2 nicad batteries and a pathetic amber LED. I want to put some white LEDs in them. Can anybody point me in the direction of some schematics for a circuit that will boost the 2.4 volts to the...

Latest posts

Back
Top