On 2010-09-01, Michael A. Terrell wrote:

"Martin H. Eastburn" wrote:

http://en.wikipedia.org/wiki/AC_power_plugs_and_sockets

I'm not so sure on the definition of plug and jack you have.
One can have most anything made.

A board of 100 jacks and a phone lady plugging in plugs to make connections.
She was pushing a male plug into the female socket in the wall.

Extension cords have both plugs on one end and sockets on the other.


There are hermapoditic connectors, like 7 mm RF and Switchcraft 2501
series.

And, to go even farther back in time, General Radio used to make
the GR874 series RF connectors for reasonable frequency ranges, and the
GR900BT series for really high (for the day) frequencies.)

O.K. Apparently, Delta still makes 874 compatible connectors.

Here is the end view of an 874 connector:

http://www.flickr.com/photos/anachrocomputer/2571135710/

And here for the GR900:

http://www.used-line.com/cgi-bin/TB/view_item.cfm?tb_model_id=52015B090B18

Enjoy,
DoN.

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