check http://www.synergy-gps.com/content/view/42/89/ the article on battery backup has some info on this....
Brian KD4FM Morris Odell wrote: > Hi Fellow Nuts, > > I've been following the thread on parsing the Motorola receiver code with > great interest. I have written AVR code to do this but have not gone to > great trouble making it bullet proof as it was a non critical application > in > a Nixie clock. I programmed the receiver to send only one message, and then > looked for the @@Ba string before I started counting bytes. I used the > number of SVs byte to decide whether the data was good. Worked fine for me! > > I'm about to start another project with an Oncore so maybe I'll experiment > with a more complex program this time. > > My question relates to the older Oncore VP receivers. I have one which had > a > dead memory battery. The receiver has an on-board battery charger for a > rechargable Li cell but they are very hard to find down here. In the past > I've used a conventional Li cell with a schottky diode to prevent the > charger from forcing current down it's throat. I was wondering if there's > any reason not to use a super cap. I only need it to support the memory for > very short periods during power burps. Will the on-board charger be OK for > a 1F > super cap? > > Any help or opinons much appreciated > > Thanks, > > Morris > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
