At 10:25 AM 7/21/2009, [email protected] wrote...
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?
Using negative voltages on the lines (referenced to ground) reduces corrosion, by making the conductor cathodic.
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