| To: | "lherault" <lherault@bu.edu>, <triumphs@autox.team.net> |
|---|---|
| Subject: | Re: Pos eart and tools |
| From: | Trevor Jordan <tjordan@vic.bigpond.net.au> |
| Date: | Thu, 15 Jul 1999 13:59:04 +1000 |
At 6:09 AM +1000 16/7/99, lherault wrote: >I'm guessing Pos. earth had something to do with electrical practice current >(no pun intended) when automobiles were being developed. I wonder if >telegraphs were set up with positive earth? But if it were simply an arbitrary choice of positive earth, and there are no particular advantages in either arrangement, then why did we subsequently go to the trouble of changing to negative earth? Trevor Jordan 74 TR6 CF29281U |
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