Browse Prior Art Database

Core Storage Sense Wire Formation

IP.com Disclosure Number: IPCOM000091352D
Original Publication Date: 1968-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Carl, H: AUTHOR

Abstract

The sense wire of a ferrite core memory plane can follow a tortuous course through the plane so as to link every core in a manner which includes offsets for noise cancellation. One method of assembling the plane involves the steps of preloading the sense wire with cores, forming it into the desired zig-zag configuration, adhesively or other- wise attaching it to the frame of the plane, and then inserting the usual X-Y drive lines through the cores. The fixture shown forms a sense wire into the desired configuration, and can, if desired, be used to hold it while it is attached to the frame, not shown.

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Core Storage Sense Wire Formation

The sense wire of a ferrite core memory plane can follow a tortuous course through the plane so as to link every core in a manner which includes offsets for noise cancellation. One method of assembling the plane involves the steps of preloading the sense wire with cores, forming it into the desired zig-zag configuration, adhesively or other- wise attaching it to the frame of the plane, and then inserting the usual X-Y drive lines through the cores. The fixture shown forms a sense wire into the desired configuration, and can, if desired, be used to hold it while it is attached to the frame, not shown.

The fixture includes a number of links 10, 12, 14, and 16 hinged together accordion-fashion. The hinge structures include projecting pins 18 interspersed with larger projecting dowels 20. The link assembly is expanded to beyond dead center open position so that sense wire 22, preloaded with cores 24, can be placed rectilinearly on the fixture, with pins 18 and dowels 20 between groups of cores 24. Each group 24 has a space in its midportion dividing it into two subgroups. The next step is to fold the fixture, back through dead center to a closed accordion position, so that sense wire 22 is in a zig-zag folded condition preparatory to being offset to its final position.

A second tool, shown in phantom line, has bars 28 and 30 which carry fingers 32 and 34. The latter engages wire 22 midway of each group 24 of cores, between the subgro...