Browse Prior Art Database

Matrix Switch

IP.com Disclosure Number: IPCOM000093679D
Original Publication Date: 1966-Jan-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Croisier, A: AUTHOR

Abstract

The left-hand drawing shows a reed switch capsule R and two bars A and B made of soft magnetic material. A magnetic field H is applied in a direction parallel to bars A and B and perpendicular to the reed switch.

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Matrix Switch

The left-hand drawing shows a reed switch capsule R and two bars A and B made of soft magnetic material. A magnetic field H is applied in a direction parallel to bars A and B and perpendicular to the reed switch.

In the off position shown, both bars are lined up end-to-end. The gap between them lies near one end of the reed switch. The flux through the gap is perpendicular to the reed switch. It is concentrated in the vicinity of the bars and the switch is not actuated.

In order to actuate the reed switch R, bar A is moved to position A'. In going from bar A' to bar B, the flux now has a component parallel to the reed switch and extends far enough to actuate it to the on position.

The right-hand drawing shows how this principle is used in large, compact matrix switches, for example, a 3x3 matrix with four circuits at each crosspoint. In order to establish a connection, the corresponding A element is pushed down. This turns on all four reeds in the vicinity.

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