You could plug it into a (circuit rated) mechanical timer, and dial up a max charge time each plugin.
----- Reply message ----- From: "EVDL Administrator" <[email protected]> To: "Electric Vehicle Discussion List" <[email protected]> Subject: [EVDL] Charger auto shutoff external switch Date: Wed, Sep 11, 2013 11:38 am > I just replaced my charger and bought a Russco 18-120, but it doesn't > have either the analog or digital shutoff. I see that Russ is now offering only one model. Apparently he no longer builds the one you have, so I assume you got it used. >From what I can tell Russ is pretty good about supporting his chargers, so maybe you could ask him what his fee would be to update / modify the charger, fitting his basic analog charging controller to it. http://www.russcoev.com/contact.html IIRC, Mark Hanson's microwave oven transformer charger does dv/dt. If you're savvy with circuits, you might be able to adapt something from his charge controller. Mark released it to the EVDL library a few years ago : http://www.evdl.org/lib/mh/docs/chargemwave.pdf For a dead-simple design, try borrowing the old Comuta-car charger design, which is essentially just a reference design from an engineering handbook : http://www.evdl.org/docs/c_car_charger.jpg It's a cycle-dropping controller (voltage limiting), not the dv/dt you want, but I guess it's better than nothing. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130911/6c4d789b/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
