Evening all! I have have asked this question in the past, and nobody on the forum seemed to be eager to answer. I rather hope that in the meanwhile, we have gained some new members, and therefore I will put my problem before you again. I am in search of a working circuitry diagram of an automatic voltage control module, as they are used in recent three phase self exciting generators. I have made up my mind, to alter the whole setup and add a 12 volts car alternator, to supply the field coils of the necessary current, and thus adding an external exciter. On the other hand it would be nice to have it working diagram of the absolute crap that came with the generator set. You never know what it might come in handy for! Your wisdom on this will be appreciated, Patrick Flanders MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.