[Spam] Re: [Ducati] Misc ponderings about regulators
Garth Williams
garthw at houston.rr.com
Wed Aug 30 14:44:01 EDT 2006
Gotcha, thanks. Having rebuilt alternators I'm familiar with the
second, but didn't realize (really just didn't think it through) that
the ducati system was that different.
Garth
MS&F wrote:
> Very simplified version:
>
> A shunt regulator monitors the maximum voltage in the charging system and
> when it exceeds a set value, "dumps" the extra current into a bank of
> resistors. Your bike has one set of stationary windings that are excited by
> a rotating magnet on the flywheel. This means that the windings receive
> maximum excitation and are working at max all the time. Any energy produced
> that is not required by lighting, battery charging etc is disposed of as
> heat.
>
> The alternator on your car has two sets of windings, a stationary set in the
> alternator body and a rotating set on the shaft. The rotating set receives
> a variable DC voltage at low current from the regulator, exciting the
> stationary windings top produce the AC charging curent. The output can
> therefore be adjusted precisely according to the system's requirements at
> any time.
>
>
> Ducati On Line thanks its sponsor and friend, Cycle Cat, maker of
> some of the most beautiful products ever for Ducati's.
> Visit http://www.cyclecat.com/
>
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>
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