---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 01/30/24: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:03 AM - Re: OVM-14 MkIII development (update) (merlewagner2) 2. 02:10 PM - One for the battery gurus: recovery from deep discharge (Alec Myers) 3. 03:12 PM - Re: Z-12N based architecture review request (user9253) ________________________________ Message 1 _____________________________________ Time: 07:03:57 AM PST US Subject: AeroElectric-List: Re: OVM-14 MkIII development (update) From: "merlewagner2" nuckolls.bob(at)aeroelect wrote: > I've published the ECB layout and assy data at > > https://tinyurl.com/ytdg9ehf (https://tinyurl.com/ytdg9ehf) > > Any any assistance in proofing the layout to the > schematic would be appreciated. Will order boards > late tonight. > > Got an order about ready to ship to Digikey for > parts. > > > We might get this project into smoke-test yet! > > > Bob . . . > > I looked at your layout and after finally figuring out the semantics it looks OK initially. It was confusing until I understood the numbering scheme for components. For me it usually takes about 3 iterations to figure out what I forgot. At 82 I am finally recognizing a memory failure. Merle -------- KC1DNJ General Radiotelephone Commercial SEL A & P Building scale P51, rebuilding Tailwind W10 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=513174#513174 ________________________________ Message 2 _____________________________________ Time: 02:10:24 PM PST US From: Alec Myers Subject: AeroElectric-List: One for the battery gurus: recovery from deep discharge I have an SBS-J16 battery in an aircraft in which the battery master was left on for two weeks (I know). When found, the open circuit terminal voltage had dropped to 2.2 volts. A Dewalt sophisticated battery charger didnt want to have anything to do with it, so Ive now put it on charge with my bench power supply at 14.4V limited to 4 amps. Initially the battery resistance was very high, and increasing - the voltage was limited at 14.4V and the current dropped from 1.3 amps, to about 1.1 amps, within a couple of minutes, and then started to ramp up, about 1mA per second. After being on charge for an hour or so, the current it is accepting has risen so the current limiting has kicked in, presently at 4 amps and the terminal voltage has dropped to 14.3 V. Im curious why the resistance was so high to start with, why it has now dropped (to what seems normal charging behaviour to me) and also to know if this battery has a chance of resurrection,. Its only a couple of years old, so if it will soldier on after its mistreatment, I would be happy. What are my chances, do you think? ________________________________ Message 3 _____________________________________ Time: 03:12:21 PM PST US Subject: AeroElectric-List: Re: Z-12N based architecture review request From: "user9253" The MZ-30L regulator output terminal 2 provides ground for an indicator light. The light needs to get positive from a fuse connected to the aircraft main power bus. Notice that there is a "Pilot Enable Switch". Every aircraft should have one of those, even aircraft without an electrical system. :-) -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=513176#513176 ------------------------------------------------------------------------------------- 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.