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  1. #1
    pedalphile
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    Build/buy a regulator

    I asked this in another thread about batteries and I thought I'd give it it's own thread to maybe get a few more responses.

    I am considering using my 18V Nicad drill batteries to power my 12V nightsun dual headlights. I would primarily run the 10 watt halogen, using the 35 for fast downhills or battling high beam running cagers.

    I believe 18V is a bit much of an over volt. 14 or thereabouts should do nicely. Having adjustability would be even better and a seperate strobe output would be the cat's ass!!!!!

    Does such a thing exist or can someone tell me how to cobble one together. I am an electronics tech and pretty good with a soldering iron, so fabrication is not a problem.

    Thanks.

  2. #2
    Senior Member Pig_Chaser's Avatar
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    Hey i built one for running a 20W halogen but i didn't actually use it in the field, just tested it in the lab and decided to go led instead. 35W total draw (10 + 35) running at once is abit of a draw, but doable. I don't think you really want to run Halogens on strobe though, methinks they do not like it.
    I dunno whats out there interms of off the shelf. I'm an electronics cobbler myself. Here's a great design reference: http://www.national.com/analog/power you can plug in your requirements in terms of voltage and current and it'll design a switching power supply for you (if you don't go switching your power wastage @ 10W would be about 1.5A * 4V = 6W).

  3. #3
    pedalphile
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    I suspect you're right about the halogens not liking being pulsed. When I was goofing around trying to get a 12 and 6 volt halogen to work in series off the drill battery, I blew 2 6V bulbs on initial start up. They seem to do fine if they survive the initial pulse. strobing them would be like starting them up repeatedly.

  4. #4
    747 Freight Pilot bicycleflyer's Avatar
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    If you can read a schematic and a bit handy, a LVR can be built.

    http://www.cs.indiana.edu/~willie/lvr.html

    A nice article on using a LVR ...

    http://www.audax.uk.net/lights/gens.htm
    Flying an airplane is really very simple...Push the stick forward, the house gets big. Pull the stick back, the house gets small. Keep holding the stick back, the house gets big again.

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