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Parallel Flux Core

IP.com Disclosure Number: IPCOM000098308D
Original Publication Date: 1960-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Bishop, G: AUTHOR

Abstract

The device is a magnetic multipath core in which the output winding is parallel to the lines of flux in at least one state. This provides an improved contrast between the 1 and 0 outputs.

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Parallel Flux Core

The device is a magnetic multipath core in which the output winding is parallel to the lines of flux in at least one state. This provides an improved contrast between the 1 and 0 outputs.

When the output winding of a multipath core is wound so that there is some flux passing through it at all times and if a 0 is read by a readout pulse, a spurious pulse occurs at the output even though the core is saturated initially. This is caused by a reversible flux change during the readout pulse and by mutual air coupling directly between the readout and output windings. The parallel flux winding arrangement shown reduces both effects.

The output winding 10 is substantially perpendicular to the readout winding 12, minimizing air coupling. It is located parallel to the reversible flux change which occurs on the 0 readout (solid flux lines), and thus does not sense the change. The same total flux change is sensed in the 1 readout (initial state shown with dotted flux lines) as with other winding arrangements. The output is isolated from inputs 14, 16, 18 or 20 because the effect of an input is to reverse flux in a direction which remains parallel to the output winding. The core is set before readout by winding 22.

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