[Vwdiesel] heavy-duty alternator for on-board genset ??

[Shirley, Mark R]

Alternator output is controlled by the voltage regulator's input
to the field winding on the alt.  If you supply 11V to the field, you
might
get 60A out of it.  Increase it to 13V, and you might get 90A.  There's 
also some voltage increase involved.  It's possible to get over 100V out

of a 12V alternator, if you give the field the right voltage and
current, and
rectify the stator windings the right way.

The way an alternator works, is you apply a voltage to the field
winding, 
which builds a magnetic field that rotates through the stator windings 
as the alt turns.  The magnetic field strength determines output, and
that's controlled
by the field voltage and current.


IIRC, Napa makes a addon box that you can add to the alternator that
makes it switchable
to welder.  That's what you should take a look at...


> -----Original Message-----
> From: vwdiesel-bounces at vwfans.com 
> [mailto:vwdiesel-bounces at vwfans.com]On
> Behalf Of LBaird119 at aol.com
> Sent: Thursday, July 14, 2005 11:12 AM
> To: vwdiesel at vwfans.com
> Subject: Re: [Vwdiesel] heavy-duty alternator for on-board genset ??
> 
> 
>   Wouldn't a high output alt do the job?  It'd only be 
> CAPABLE of the high 
> output.  If you only need 15A to meet your cruising demands 
> then wouldn't 
> that be the load it would create?  Then if you're drawing 
> 100A then it'd be 
> able to provide 100A as well (providing it's not a 90A alt!)
>   Don't alts tend to basically put out the demand required, 
> up to their 
> limit?
>      Loren
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