Corrosion protection, similar to why the old MG cars ran on a positive ground.
On Tue, Jul 21, 2009 at 8:25 AM, <[email protected]> wrote: > Most wireless sites will be 28 volts also. Some are switching to the telco > standard of -48 which when measured is actually around -56 volts. One reason > for going to a higher voltage is, you can use smaller conductors to get same > amount of power out. > > Not to steal the thread, but any one know why the telephone company choose > to use a negative voltage? Where as the positive is referenced to ground? > When I was a kid I was told it was because they discovered that the battery > terminal would corrode if it was done that way? > > > > > > > _______________________________________________ > 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.
