Date:         Sat, 12 Jun 2010 12:57:19 -0700
Reply-To:     mark drillock <mdrillock@COX.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         mark drillock <mdrillock@COX.NET>
Subject:      Re: How to modify Bosch regulator for remote sensing.
Comments: To: David Beierl <dbeierl@ATTGLOBAL.NET>
In-Reply-To:  <4c13d051.c413dc0a.3782.179e@mx.google.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

One question I have is how high can the regulator be fooled into driving
the output voltage of the alternator at the alternator? If during
charging the wiring connection between the regulator sense point and the
alternator output leg is somehow lost, what happens? In gas Vanagons the
loss of the connection to the battery is a very real possibility and the
ECU could still be on the alternator output side, so if the regulator
could force the output voltage very high without knowing it I wonder if
something bad might happen. In the stock configuration the regulator
sees the charging voltage at a point internal to the alternator so a
loss of the connection to battery does not mean a loss of the sense
connection as well. Any data on this?

Mark

David Beierl wrote:
> This illustrates how to modify a Bosch regulator so that you can take
> the sensing voltage direct from the battery instead of from inside
> the alternator. This compensates for all voltage drops between
> regulator and battery, bringing full regulated voltage to the battery.
>
> <http://picasaweb.google.com/dbeierl/ModifyingABoschRegulatorForRemoteSensing?feat=directlink>
>
>
> Yours,
> David
>