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Path: utzoo!decvax!genrad!panda!talcott!harvard!seismo!hao!noao!terak!dap
From: dap@terak.UUCP (Damon Anton Permezel)
Newsgroups: net.bicycle
Subject: Lights
Message-ID: <934@terak.UUCP>
Date: Tue, 10-Dec-85 10:37:32 EST
Article-I.D.: terak.934
Posted: Tue Dec 10 10:37:32 1985
Date-Received: Fri, 13-Dec-85 02:31:08 EST
Distribution: na
Organization: Calcomp Display Products Division, Scottsdale, AZ, USA
Lines: 32

A while ago I purchased a Sanyo generator (the type whose plane of rotation
is the same as that of the rear wheels) and a Halogen light.  I finally got
around to installing them recently.  Twice now I have left on the return
trip home from work with a brand new halogen bulb, only to have the sucker
blow out after 40 yards of travel, leaving me to negotiate the remaining
10 miles in the dark.

Not being the type with limitless funds to throw at my bicycle, and with
replacement bulbs being 7 bucks apiece, I decided to attempt the rational
approach and check for electrical compatability.

The bike store claims that the halogen bulbs are 2.5V, 3W.  I put a V meter
on the generator, and, as the speed increased, so did the V, smoothly up to
~10V (AC).  Then, there was a jump discontinuity in the V reading
(RMS notwithstanding), to about 25 V, after which it backed off smoothly
to ~10V.

Is this normal in a generator?  Lacking any understanding of the physics
involved, I am tempted to conjecture that I have found another demonstration
of the Newman energy machine, wherein copper atoms from the windings are
being annihalated right there between my feet!

But seriously, has anyone out there had similar problems with the Sanyo?
Can I put a voltage regulator in the circuit?  Most of them that I have seen
are DC.

Please respond via direct mail to {decvax,ihnp4}!terak!dap.

Cheers,
dap

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