On Fri, Mar 9, 2012 at 12:58 PM, Herbert Graf <hkgraf@gmail.com> wrote:

> "Integrated Magnetics" has nothing to do primarily with noise
> suppression. Ethernet requires a transformer between the MAC and the
> actual jack.
>
> Traditionally this was always done by an external part. Look at pretty
> much any network card and chances are you'll see the transformer, it's
> easy to spot.
>
> To reduce costs, manus started putting the "magnetics" into the jack
> itself. This results in a slightly larger jack, but one less part to
> source, route for and mount.

My wife, also a computer "geek" but without an EE inclination was asking
me why anyone would design with a jack without built-in magnetics these
days.

Could anyone clue me in?

Thanks,
   Bill

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