Conductor driven field access magnetic bubble memory propagation

Details Conductor driven field access magnetic bubble memory propagation Conductor driven field access magnetic bubble memory propagation

1977-10-12

1979-05-08

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Rotating field circuits

365 2, G11C 1908

Patent

active

041539478

ABSTRACT:
In a magnetic bubble memory device, an improvement to the means for providing an in-plane rotational magnetic field to advance bubbles through some appropriate, staged structural form of permalloy elements is a conductor overlay positioned so that the permalloy elements are generally oriented normally to current flow in the conductors. The conductor overlay may consist of two orthogonal groups of parallel wires or a single grid or mesh of wires with four electrical connections, one on each of four edges. The conductor overlay may be driven to produce an in-plane rotating magnetic field and the magnetic bubbles travel to or follow the induced poles in the permalloy elements just as if conventionally driven.

REFERENCES:
patent: 4045786 (1977-08-01), Lee

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