alt.energy.homepower

Per Ulysses:
>You could make a bridge rectifier with four very small diodes and use an
>adjustable voltage regulator (LM317 Radio Shack). You would only need to
>add a couple of capacitors and resistors, one being adjustable, and the
>whole thing would be not much bigger than a book of matches. You could then
>choose 3 volts or 6 volts (3 would be easier) as long as the bulb does not
>use more than amps. If necessary you could use the bicycle for a heat
>sink. The Radio Shack regulator has the circuit diagram on the back of the
>blister pack.
>

I wimped on the bridge rectifier and ordered 3 from Radio Shack
(figuring I'll toast at least one klutzing around... and at three
bucks each, why not?)

Looks like I'll be getting a voltage regulator too.

Sounds obvious from the name, but just tb sure: this thing will
lock the voltage at whatever I set it to, right? So the input
voltage may vary from 3 to 20 volts, but the output will always
be, say, 3.

As far as using the bike frame for a heat sink goes, I'd expect
to find some sort of heat-conductive putty and embed the two
components in that and just stick it to someplace on the frame.
Sound right?

Where do the capacitors and resistors come in?

Capacitors to even out the flow and/or store a little for a few
seconds of light when the bike stops?
--
PeteCresswell