Any ordinary alternator will charge a 24 volt battery. As we all know, the output of an ordinary alternator is capable of very high voltages if un-regulated or unloaded.
The simplest way is to bypass the internal regulator, if any, bringing out the field (rotor) supply feed and attach to a rheostat to manually control the output power. Hook the alternator to the 24 volt battery, crank up the engine, and adjust the field current to produce the desired output current. For automatic operation you could use a regulator that will work properly at 24 volts. Perhaps Ann-Marie can help here. Maybe you could modify a normal regulator to work by using two identical high resistance resistors in series across the 24 volt batteries as a voltage divider and attach the regulator voltage sensor across just one of the two resistors. Perhaps it would work by connecting the regulator across half of the 24 volt battery. Perhaps switching the half from time to time. Norm S/V Bandersnatch Lying Julington Creek FL 30 07.72N 081 38.4W > [Original Message] > From: Harold R. Brink, PE <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Date: 2/7/2008 8:18:06 PM > Subject: (T&T: & TWL2:) Fw: & TWL2:) Re: 24V starter, 12V house bank - Ugh! > > > At Ann-Marie's Request: > > > "The alternator will be a Leece-Neville 12V. Ugh!!" > > > > L-N had a 12/24 volt alternator many years ago in a career far away. It > > was used on 24 volt start engines with 12 volt chassis. It was used when > > Mack got rid of the infamous series/parallel switch. > > > > Mack Trucks used them. Try a Mack dealer. Or a Cat "truck" dealer. > > > > No commercial connection. Just FYI. > > > > Harold > > > --~--~---------~--~----~------------~-------~--~----~ > To UNSUBSCRIBE or change your email from live to digest or web board only, please send a request to Andina at [EMAIL PROTECTED] > POST messages in an email to [EMAIL PROTECTED] > View the live board at http://www.yandina.com/TWL2 > -~----------~----~----~----~------~----~------~--~--- _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
