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Sense Inhibit Winding for Magnetic Memory

IP.com Disclosure Number: IPCOM000092250D
Original Publication Date: 1968-Oct-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Perlman, DJ: AUTHOR

Abstract

In this core memory plane, the sense-inhibit winding is in parts, 31 and 32. Both part are connected to differential sense amplifier 23, which rejects common-mode noise, and to inhibit driver 21. The sense-inhibit windings are disposed parallel to the X direction of the core plane and are transposed at the column centerline to provide noise cancellation.

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Sense Inhibit Winding for Magnetic Memory

In this core memory plane, the sense-inhibit winding is in parts, 31 and 32. Both part are connected to differential sense amplifier 23, which rejects common- mode noise, and to inhibit driver 21. The sense-inhibit windings are disposed parallel to the X direction of the core plane and are transposed at the column centerline to provide noise cancellation.

Each winding 31 and 32 forms a repeating pattern that occupies four rows of the core plane. One part 31 of the winding starts at the left-hand side of row 1 where it is connected to amplifier 23. It is wound across through the left half of row 1 and the right half of row 3 and is wound back through the right half of row 4 and the left half of row 2. Part 32 starts at the left-hand side of row 3, where it is connected to the other terminal of amplifier 23. It is wound across through the left half of row 3 and the right half of row 1 and is wound back through the right half of row 2 and the left half of row 4.

The pattern of the first four rows is repeated for a desired number of times in a winding segment. Part 31 is continued to the first row of the next group and part 32 is continued to the third row of the next group. Thus, along the left side of the array, each row of the sense-inhibit winding is jumpered over two intervening wires for all the interconnections between four-row groups.

The crossovers are preferably formed by preformed, printed circuit connectors that are supported by an extension of the...