Re: positive ground

Posted by John T on September 11, 2007 at 06:52:54 from (66.244.83.147):

In Reply to: positive ground posted by Jayrod on September 10, 2007 at 20:59:22:

First of all an incandescent light bulb is NOT polarity sensitive, it still draws current and will still give off light REGARDLESS of what direction the curent flows through it and regardless if its DC or AC current. Electrons passing through the filament gives off heat and light energy.

As far as current flow (the movement of negativley charged free electrons) it only happens when theres FIRST a potential voltage difference and a conductor of electrons (a load and its associated wiring) between the potential voltage difference terminals such as say the + and - terminals on a DC storage battery.

As far as current theres BOTH the movement of electrons and then there's movement of the "Holes" left behind by the vacated electrons (The Hole theory I believe its called). That might (or may further confuse lol) help a layman understand internal battery and external battery currents, cuz if what may be labeled as "conventional current" is flowing from + to -OUTSIDE the battery, then INSIDE the battery theres gotta be current flow from - to + .

As best I can recall (hey its been 40 years ago at Purdue lol) our instructors referred to + to - current flow OUTSIDE the battery as "conventional current" while current flow INSIDE the battery from - to + as "electron current" (Thats the likes repel and opposites attract stuff, - charged electrons flow away from the - terminal towards the + terminal)

A good conductor of electricity like copper has free electrons that can easily be given up in its outer orbit, while a poor conductor like glass does not have such. If the negatively charged electrons are knocked out of their orbit as current flows in one direction then what may be called a "Hole" (a vacancy) is present and while electrons flow in one direction those "Holes" (vacancies) flow in just the opposite direction.

Whewwwwwwwwww I had to dig deeeeeeeppppppp in my old brains hard drive to dig that out so nooooooooo warranty express or implied lol

That all said a genny can still work n charge at EITHER Pos or Neg polarity provided its properly POLARIZED and dont anyone get hung up or overly confused about Pos or Neg ground cuz all that consists of is bonding a huge hunk of iron (tractors frame) to one battery post or the other, while the charging and current flow and the laws of physics and battery theory still goes on REGARDLESS of which battery post you hung some iron onto.

Forgive me being rusty on all that "conventional current" n "electron current" and "Hole Theory" stuff its just been toooooo dernnnnnnnn long lol but for a continuous current to flow from the battery through an external load n return to the battery, then inside the same battery theres gotta be current flow also and one is + to - and the other - to + so all the terminology and "conventional current" and "electron current" and "hole current" is sort of how I was taught.......

John T (Toooooo long retired EE)

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