Browse Prior Art Database

Ferrite Keeper Fabrication Technique

IP.com Disclosure Number: IPCOM000092467D
Original Publication Date: 1966-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Booth, RR: AUTHOR [+2]

Abstract

The drawing shows a section of a magnetic thin-film storage device with an improved keeper. The device has word conductors 2 and bit conductors 3 disposed in orthogonal directions. Two thin magnetic film elements 5 are positioned on opposite sides of the word conductor. This material is oriented magnetically to have a hard axis of magnetization in the direction of flux produced by conductors 2 and to have an easy axis of magnetization in the direction of flux lines produced by conductors 3.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Ferrite Keeper Fabrication Technique

The drawing shows a section of a magnetic thin-film storage device with an improved keeper. The device has word conductors 2 and bit conductors 3 disposed in orthogonal directions. Two thin magnetic film elements 5 are positioned on opposite sides of the word conductor. This material is oriented magnetically to have a hard axis of magnetization in the direction of flux produced by conductors 2 and to have an easy axis of magnetization in the direction of flux lines produced by conductors 3.

Storage locations are formed where conductors 2 and 3 intersect. During a read operation the film elements are driven by a conductor 2 current and are magnetized in their hard direction. In this state the two film elements form a nearly closed magnetic path. For storage, the films are magnetized in an easy axis direction. In this state keeper 6 forms part of the magnetic circuit. Keeper 6 is made of a suitable magnetic material such as a ferrite.

Bit conductors 3 are insulated from the magnetic film elements by strips of insulation 4. In the storage device of the drawing, the insulation for the bit conductors is cut away in the region between conductors 3 so that keeper 6 extends into the space between conductors 3 and their insulation and closely contacts the magnetic film elements.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]