[Noisebridge-discuss] 83c network up and running
jim
jim at well.com
Thu Oct 2 23:11:07 UTC 2008
thank you a lot!
(it's been maybe a long time since i've
looked at these things. i have various devices
lying around: all of them are the same as
yours. now i know to check what i'm bringing
both as to polarity and, as soon as i find
out, to amperage (seems a good idea to power
the device even if someone else brings
another).)
more thanks,
jim
On Thu, 2008-10-02 at 15:53 -0700, Lamont Lucas wrote:
> I'm looking at my office's linksys WRT54gl wireless router, and the back
> is clearly marked with a negative sign linking to the outer shielding
> and the positive sign pointing to the enclosed center dot.
>
> I don't mean to argue, I just want to save someone the trouble of
> bringing the wrong wall wart.
>
> (oh, and the one I'm looking at is 1 amp, 12 volts)
>
> jim wrote:
> > generally not in the case of the usual wall
> > wart: positive is on the outside (i know there
> > are exceptions, i haven't encountered them).
> > for most devices, both signal and power
> > connectors have their external connection as
> > negative, often tied to the neutral of the
> > house AC or to the house AC ground lug (more
> > or less the same thing as far as most
> > electrons care).
> > there's probably some good design reason
> > opposite orientation in wall warts.
> > i am often mistaken.
> > jim
> >
> >
> >
> > On Thu, 2008-10-02 at 14:25 -0700, Lamont Lucas wrote:
> >
> >> jim wrote:
> >>
> >>> what is the amperage required for the
> >>> linksys 12V power supply (i'm assuming
> >>> the standard wall wart with positive
> >>> external, negative internal connector)?
> >>>
> >> uh, other way around, right? Positive internal, negative external shield?
> >>
> >>
> >>
> >
> >
> >
>
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