Re: An Absolute Beginner With A Few Questions

On 2005-12-15, Big Mouth Billy Bass <nannerbac@xxxxxxxxx> wrote:

> The topics of electron flow and energy flow are a big-assed can of
> worms. Instructors blame Ben Franklin for misunderstanding the
> direction of electron flow, but he actually had a good grasp of how
> electrical energy flowed. (His "kite and key" experiments were
> intended to figure out a way to protect dwellings from burning down
> from lightning strike, and were a real success.)
>

> Thus we have energy flow from positive to negative, whereas actual
> electron flow is from negative to positive. In applied electronics,
> energy flow is more important than electron flow. Here's a heads-up
> for you - when you get to transistor theory and design, they'll throw
> "hole flow" at ya. Yikes!

electrical energy doesn't always flow from positive to negative, else how
would AC appliances operate?

It is traditional to use a positive supply and negative ground in many
designs (especially digital) but as you noted "communications" equipment
(telephone?) uses positive earth.


Bye.
Jasen
.

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