I have to say ,this is probably the most intresting subject. I am not an
electrictian and to have the explaination of this system, well it is fasinating.
gentlemen thanks for the info.
Again this bunch of people are a very well informed group.
chuck series ll
Jarrid Gross (Yorba Linda, CA) wrote:
> ----------
> From: Rootes(at)aol.com
>
> >This is just a guess, but it COULD serve as an energizing circuit for the
> >generator, if the generator lacks a field winding relay. It could also act
> >like the "warning lamp simulator" used on later alternator equipped models
> of
> >both Sunbeams and Humbers, along with other Brit stuff. When current was
> being
> >generated, the power heated a wire inside a flasher-like device, which in
> turn
> >broke the contact to the warning lamp, thus extinguishing it.
> >Jon Arzt Rootes(at)aol.com
>
> I think Jon is right, the bulb puts current into the dynamo windings, and
> will also
> put a small magnetic field into the dynamo, where the iron is magnetized,
> and
> sort of acts like a periodic "polarization procedure". The iron used in the
>
> dynamo is not very permiable, so periodic use keeps the generator internals
> properly magnitized. The bulp helps would help things along.
>
> Also, a light bulb is not exactly a resistor, it is actually an RTD, or a
> resistor
> with a terrible positive temperature coeficient. This is relevent to the
> discussion as when the buld is dim "cold" the resistance is very low, and
> the current through it and into the dynamo is high. As the bulb heats up,
> and glows, the resistance goes up, and the current is reduced
> proportionally.
> In this way, you get to visually see a discharge condition because the
> battery (feeding the bulb) is at a higher potential than the dynamo output.
> Also, the buld allows a brief high current to flow to the windings, that
> current limits as the bulb glows.
>
> Jarrid Gross
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