Browse Prior Art Database

Flux Gain Multiaperture Core Logic Circuit

IP.com Disclosure Number: IPCOM000097119D
Original Publication Date: 1962-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Betts, R: AUTHOR [+2]

Abstract

Binary information stored in a condition of a magnetic flux state of a precedent core is transferred to a condition of the magnetic flux state of a subsequent core during discharge of the coupling capacitor between them. Because the circuit does not have semi-conductor devices, it has particular advantage for high temperature and radiation environments.

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Flux Gain Multiaperture Core Logic Circuit

Binary information stored in a condition of a magnetic flux state of a precedent core is transferred to a condition of the magnetic flux state of a subsequent core during discharge of the coupling capacitor between them. Because the circuit does not have semi-conductor devices, it has particular advantage for high temperature and radiation environments.

The flux gain multiaperture core 1 has apertures 10, 12 and 14 which establish legs I, II, III and IV. The ratio of the areas of legs I and III may vary considerably dependent on the circuit parameters. It is critical that the area of leg III be greater than the area of leg I. Suppose the area of leg I equals one-half the area of leg III.

The discharge of capacitor C1 into winding N1 switches the flux in leg I and an equivalent amount of flux in leg III. Since the area of leg I is one-half that of leg Ill, only one-half of the flux in leg III is switched. Shorted turn 16 prevents flux in leg IV from switching during the foregoing. The switching of the flux of leg III charges capacitor C2 whose discharge current switches the remaining flux in leg
III. All the flux that was switched in leg III is available at output time and makes branching to a plurality of cores easily accomplished. When drive winding N2 is energized, the flux in leg III switches, charging capacitor C2. When capacitor C2 discharges, it switches the flux in leg I of the subsequent cores, transferring the b...