So I guess you haven't renewed your Cablelink subscription in a while then :-)
Niall O Broin wrote:
> On Mon, Jun 19, 2000 at 12:28:39PM +0100, John P. Looney (Kate) wrote:
>> > > after purchasing a wet/dry electric shaver that recharges with no
> > > metal contacts i had to refuse a female coworker's request to take
> > > it apart to see how it worked.
> > I can see her point. I've a toothbrush that works on similar principals.
> > I tryed to take it apart, but it's glued shut.
>> Just to take Kate, Kevin and his unnamed female co-worker out of their agony
> these "no metal contacts" charging devices are charged by inductive
> coupling, whereby a current flowing in one wire will induce a current to
> flow in another wire laid alongside it (there are magnetic fields involved, but
> we're sticking to a nice simple explanation). Intervening plastic is not
> problem (as long as there's not too much of it). This is the same principle
> involved when you hack your cable TV service whilst not being a subscriber
> by running a wire in your attic parallel to the wire outside belonging to
> Cablelink. Of course the brute force and ignorance approach of simply
> tapping into their cable is simpler, but that's illegal :-)
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