Posted by chriscase on Monday, November 19, 2007 at 19:41:26 :
In Reply to: OT electrical question(positive ground) posted by Kevin in Ohio on Monday, November 19, 2007 at 13:00:57 :
But since starter motors use the same source to make the field as they do to make the ..umm...umm...core? then they would both get reversed, and work the same way. Like two negatives= one positive?
Most electronics are protected by putting a diode in the circuit- if the power supply inside doesn't already use one for some reason other than protection. Like switching, voltage control, inverting dc to ac. Maybe things like window and mirror motors had permanent magnets in them,so didn't work?