alt.energy.homepower

On Aug 29, 9:02 am, "Steve Spence" wrote:
> "MooseFET" wrote in message
>
> news: @ ...
>
> > On Aug 28, 4:24 am, The Real Andy wrote:
> > [....]
> >> >I am on very thin ice here. But would it not be possible to descemle a
> >> >couple of alternators, and use the magnets and other stuff inside them
> >> >to build a windmill?
>
> >> The problem it that car alternators do not have magnets.
>
> > Any alternator that has been installed and used on a car will "build
> > up" if you wire it up and give it a spin. There is enough
> > magnetization left to overcome the rectifier's forward drop.
>
> Not without the field coils energized. I saw a circuit once for self
> energizing the coils. It's still a parasitic load.

Have you tried it?

You only need enough perm in the magnetic parts to make a couple of
volts to get the thing to build up.