Browse Prior Art Database

Switching Matrix

IP.com Disclosure Number: IPCOM000093773D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Gergaud, F: AUTHOR

Abstract

The device couples some row to an arbitrary column within a switching matrix. Such coupling occurs upon concurrent excitation of the row and column to be connected.

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Switching Matrix

The device couples some row to an arbitrary column within a switching matrix. Such coupling occurs upon concurrent excitation of the row and column to be connected.

Rows and columns are mercury filled tubes. The rows lie in one plane. The columns are at right angles to the rows and lie in a plane parallel to the first plane. Rows and columns are connected via U-shaped tubes 1 disposed at the crossover points of the columns and rows. Inside tube 1 one end of an electrode E the diameter of which is smaller than that of tube 1 continuously dips down into the mercury contained in that column 2 coupled to tube 1. The mercury level within the side of tube 1 that connects the corresponding row 3 is kept below the other end of electrode E.

Should pressure be applied to one end of a row 3, the mercury in it will be caused to flow if able to do so. Should a negative pressure be applied to some column 2, the mercury in it has a tendency to fill in the vacuum created thereby. Should both above mentioned movements be conjugated, the mercury level comes up through the left side of tube 1 and goes past the electrode E corresponding end level while coming down on the right side of tube 1 thus establishing electrical connection between row and column.

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