Contact noise (Was: Life of round DIN connectors ?)

On 2008-07-30, Baron <baron.nospam@xxxxxxxxxxxxxxxxxxxxxx> wrote:
Andre Majorel wrote:
On 2008-07-23, Baron <baron.nospam@xxxxxxxxxxxxxxxxxxxxxx> wrote:
Andre Majorel Inscribed thus:

That was my way of saying that the currents involved are on the
order of 0.1 mA so a very low contact resistance is not needed.

With very low currents I would have thought that you would
need a low contact resistance and probably gold plating as
well.

My possibly naive thinking was that with so little current,
you wouldn't need a super-low contact resistance to achieve
low voltage drop and low dissipated power. What am I missing ?

Noise ! This is a potential problem with any connectors
particularly in audio circuits.

Can anyone point me to an online document going into the when,
why and how of that ? I searched for "contact noise" and
variations thereof but got nowhere.

Along similar lines I had a client this morning with a broken
USB connector on his computer. Now how on earth do you manage
to break off the white plastic bit that supports the contacts ?

Maybe they stepped on the cable. The plug gives quite a bit of
leverage for the height of shell.

--
André Majorel <URL:http://www.teaser.fr/~amajorel/>
"Buy in bulk, that's my advice." -- Lemmy
.

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