Let me ask you a silly question:  do you have a battery connected to the
output of the alternator?  The battery will act as a large capacitor, as it
does in an automobile.

Regards,
Bob

On 12/8/05, Russell McMahon <apptech@paradise.net.nz> wrote:

>
> Voltage stability at constant load is "OK" but if you step-change the
> load it surges extremely badly. Variation is enough for incandescent
> bulbs to dim badly and/or get VERY bright for a second or so. I
> measured the surges a while ago but don't recall the results - very
> nasty is enough to know. Some loads don't mind this while others would
> die.
>
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