Re: ????

Posted by Kentb of SWMO on January 15, 2008 at 06:03:24 from (162.39.190.199):

In Reply to: ???? posted by m zim on January 15, 2008 at 03:33:37:

I think it was a hold over from EARLY electrical theory that thought that current flowed from positive to negative. Current really flows from negative to positive. Either system works and I do not know why Peterbilt still uses positive ground. Negative ground became more popular I think because MOST of you solidstate electronic use NPN transistor which mandate negative ground.

Kent

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