Congratulations on Parker. Keep the little guy away from the high
voltage stuff. I doubt shielding is an issue for pure DC because any
tiny bit of RF the cable could pick up would either be irrelevant or
easy to filter out. Maybe coax is cheaper. Maybe they also run data
down those cables on top of the DC or they want that option open for
future development. Maybe they know it will make the cables harder to
repair... --J.B.
John Moore bigfish@pacbell.net [Avid-L2] wrote:
>
>
> With a new Lab Puppy, Parker, in the house I've warned everyone about
> leaving cables in puppy zones. Last night Parker found a tasty chomp
> fest in my daughter's mag safe power supply for her macbook pro. No
> biggie I broke out the heat shrink and solder iron and it's fixed.
> I'm curious about the power cable. It has a fairly big center
> conductor and a heavy breaded mesh shield. None of that is surprising
> but I'm curious why the choice of a shielded cable over a twin lead
> cable given it's a power supply.
>
> I assume the use of the shielded cable is to avoid in emf noise
> effecting the power on the cable. I haven't checked what the voltage
> is on the connector but is the shield to avoid interference from the
> outside world causing noise on the power input or is it to avoid noise
> being radiated out to the outside world. I guess with all the cables
> running into the macbook pro in a more or less parallel configuration
> the shielding makes sense to avoid any cross talk. No problem with my
> solder job but it made me wonder a shield cable was used.
>
> On a pure puppy note I'm wondering if anybody knows if Thunderbolt
> cable is more or less tasty than the mag safe cable? I don't want to
> spring for a taste test. Also as I step into the world of potty
> training I'm thinking of using the term "LUT" for going number one and
> "LOG" for going number two. I figure if LUTs can piss me off the
> term can certainly be used to make Parker go number one. LOG speaks
> for itself. ;-) My hope is I will issue the command in front of some
> DPs at the Dog Park and maybe they will take the hint. I like my dog
> park like my video, WYSIWYG.
> John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net
>
>
>
Posted by: john beck <jb30343@windstream.net>
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