Re: More polarity, please

[Scott Mugan]

Yes the center of the connector is the + or "hot" side.
-Scott


on 10/9/01 12:51 AM, Janice Freeman at [EMAIL PROTECTED] wrote:

> does that mean that the plus sign must be connected to the center dot inside
> the capital C with a solid line?


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More polarity, please

[Janice Freeman]

Hi,
I'm sorry to keep sounding really dumb, but polarity is really scaring me! I
thought I understood from Fabian's original post that the order the plus and
minus was printed on was what I was looking for on a new adapter, but the
explanation below made me suspect I was missing the boat:


"Sorry, Janice, but you have to dredge up a 10V adaptor. I can't understand
the polarity indicators, the way you show them, but I know it's hard to
reproduce this in typing. The polarity is important: the little diagram
tells you how it's set up on that particular adaptor. The  (-) symbol will
have a line connecting it to either a dot or the ring surrounding it. These
represent the center pin (or hole on the end of the plug), and the collar
(or metal shaft on the plug, with a plastic insulating collar at the tip,
separating it electrically from the hole). If the center dot is positive on
your ORIGINAL PowerCD wall transformer, then you must use a power adaptor
with a positive center contact (the hole in the center of the plug), and
of course the outside shaft (the metal barrel of the plug) is negative."

So, when Fabian says that polarity must be

Polarity:  (-)--C--(+)

does that mean that the plus sign must be connected to the center dot inside
the capital C with a solid line?

Can anyone suggest a good primer I could read to understand all this
electrical stuff? I have a bunch of orphaned adapters in my classroom
computer lab, and bin of orphaned donated equipment, but I can never seem to
make a perfect match.
Thanks,
Janice 



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