Browse Prior Art Database

Improved Sense Winding for Core Matrices

IP.com Disclosure Number: IPCOM000098810D
Original Publication Date: 1959-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Allen, CA: AUTHOR [+2]

Abstract

The drawing shows an improved wiring pattern for the sense winding of a high speed magnetic core matrix. This pattern incorporates the desirable features of the presently known Figure 8 winding pattern but provides more effective cancellation of noise generated by direct coupling between activated address lines and the sense winding.

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

Improved Sense Winding for Core Matrices

The drawing shows an improved wiring pattern for the sense winding of a high speed magnetic core matrix. This pattern incorporates the desirable features of the presently known Figure 8 winding pattern but provides more effective cancellation of noise generated by direct coupling between activated address lines and the sense winding.

The improvement in noise reduction is obtained by arranging the sense winding so that any two of its segments which are adjacent the same address line run in opposite directions and are approximately equal distances along the winding from the terminals. With this arrangement, noise pulses generated by line to line coupling are effectively cancelled. Consider, for example, noise generated in the sense winding from row address line 7. Since the two sense winding segments adjacent the address line are equal in length, the noise signals (+n-) are equal in magnitude. Because of the winding pattern employed, they are of opposite polarity and also approximately equal distances from the sense winding terminals. They reach the terminals at substantially the same time and largely cancel each other.

1

Page 2 of 2

2

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