Re: + or - ground whats the difference?

Posted by Jon H on January 25, 2005 at 14:07:03 from (69.26.18.51):

In Reply to: Re: + or - ground whats the difference? posted by Bob on January 25, 2005 at 11:23:23:

Those in the picture Bob posted are exactly what I was talking about. I have an old Allen generator test stand from the 40's? that has a bank of 4 of them to produce power for the variable speed(DC?) electric motor that turns the generator,atleast that is my best guess as the tester was not in working condition when I got it. Also one of my childhood memories is of being in the shop of the Minniapolis Moline dealer back in the 50's and that I was facinated by those glowing bulbs when they were using that old battery charger. seems I remember the owner complaining that they had a short life.

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