---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 09/08/19: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:01 PM - Aux Battery Idea Was: Speaking of Aux Batteries (David Saylor) 2. 10:45 PM - aeroelectric digest (anthony foran) ________________________________ Message 1 _____________________________________ Time: 10:01:14 PM PST US From: David Saylor Subject: AeroElectric-List: Aux Battery Idea Was: Speaking of Aux Batteries We're going to remodel our panel soon. Some of the things I want to do better than the existing setup are to simplify operation, provide anti-sag for starting, and provide some backup power. Most of the components I plan to install have main power and aux power inputs. Aux power inputs (also called aircraft power 2, etc) would be powered from the aux (anti-sag) bus. Almost everything on the aux bus would also be primarily powered from the main bus, and only be pulling from the aux when the main voltage is low. That's all built in to the components. I don't mind an extra battery, especially if I can convince myself that a small EarthX is something I can live with. It does a few nice things, including limiting is charge rate. But that's not what I'd like to discuss now. I would like comments on this anti-sag idea. I think separating the starter contactor coil from the main bus would eliminate the timeliness issue that Bob described: The 'trick' is all in the timing. Boost has to initiate before the starter contactor closes and needs to sustain past (1) rise in battery voltage due to expiration of inrush current or (2) contactor opening, which ever happens first. I'm fiddling with some ways to get that to happen. Here's a work in progress. Obviously not complete, no alternator shown, lot's of detail omitted, etc, but the starter contactor power is shown. That's the key, unless I'm missing something. Please ignore the current ratings. They're not complete yet. --Dave ________________________________ Message 2 _____________________________________ Time: 10:45:21 PM PST US From: anthony foran Subject: AeroElectric-List: aeroelectric digest Hi Matt,=C2- Is the aeroelectric list digest still being sent out. I stop ped receiving it several weeks ago.=C2- thought i may need to donate again so did that a few days ago. Also checked on you list of unsubscribed email addresses and not there.regards.=C2- T ony Sent from Yahoo7 Mail on Android ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.