Recent content by Mike Painter

fenix-store
  1. M

    Other ways besides soldering?

    Look for this on Amazon and read the reviews. They seem to be either 5 stars or one star. High resistance and long set time are two of teh problems. There is an epoxy mentioned on tehr Amazon site but it is pricey.
  2. M

    26500 vs 18650

    You know that. I know that. My fingers don't.
  3. M

    26500 vs 18650

    No breaks given, but tehre is always an excuse. It's not spelled wrong, it's the name of the variable."
  4. M

    26500 vs 18650

    Failing that you can have a spelling flame war! "Dual" would sort of imply you have similar views. You want a duel
  5. M

    26500 vs 18650

    The 1.6 x volume did take into account the different lengths. A 26 will have about twice the volume of an 18 given the same length.
  6. M

    26500 vs 18650

    OK, so this is a year old but I'm interested in 26500 Li-ons and can't find what I want. Since the area varies with the square of the diameter, a 26500 has an area of 531 while the 18650 is at 254. A 26650 would have over twice the volume. An 18650 has a volume of about 16532 while the 26500...
  7. M

    battery tubes and storage - 2 questions

    I glued some rubber like shelf lining, the one with holes, into alkoids tins. It's like they were designed to hold six NiMNs
  8. M

    Date format - where is the logic?

    Which brings us back to "What weighs more a pound of feathers or a pound of gold?" Back when I learned the correct answer to this it was hard to show the answer but today we have the Internet and know that feathers weigh more
  9. M

    Date format - where is the logic?

    Ask how many inches there are in a mile and 100% will not know. "How many gallons in a cubic foot of fresh water?", is also fun.
  10. M

    LED project for 9 year old… suggestions?

    Anything with flexible sides allows a "switch". The photon light is a good example. If you buy a bunch of the cheap ones you will have batteries and LEDs for less than a buck each. Screw on "switches" also cost nothing. The idea of a one shot emergency light sort of fits her idea. Button cells...
  11. M

    New li-ion tech on its way - higher density

    Science Daily and Slashgear are two places to monitor for information on new battery technology. Science Daily is the better choice but since both contain a lot of information about other things they are both addictive.
  12. M

    Back in the old days...

    I'm looking for a simple way to drive banks of LEDs from a 12 volt vehicle system and came across this "ancient" post from the dark ages. Way back in May of 2006 someone asked about doing it and here is one of the responses. "What do you want to achieve with that? Regardless of the reflector...
  13. M

    H6FLEX wiring

    What is the best way to wire this device if it is attached to the LED heat sink to allow for temperature control? All wires on one side and route them around the side of the driver or drill the sink and solder from the back of the driver?
  14. M

    Question about battery voltages on LED's (I'm confused)

    If LEDs (or anything) are in series then the amperage is constant and the voltage needed is the sum of the voltages across the LEDs. If LEDs (or anything) are in parallel then the voltage is constant and the amperage needed is the sum of the current across the LEDs. Most regulators regulate...
  15. M

    Triple xml mag , build questions

    The H6FLEX is designed for series connected LEDs. In general you will need one more Li-on battery then you have LEDs as the battery voltage must be higher than the LED gets. 3.5 volts per LED X 3 = 10.5 volts. The amperage in series is constant and teh voltage adds (or drops) The voltage in...
See more

Latest posts

Top