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Word selection by integrated magnetic needles in the 107-bit THEMIS store

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4 Author(s)
De Haan, H. ; Philips Research Laboratories, Eindhoven, The Netherlands ; Lishman, D. ; De bruin, A. ; Goes, W.

Word currents in the batch fabricated THEMIS store are supplied by magnetic selection needles closely integrated with the storage elements. The selection needle behaves like the well-known switch core. The word current generated is a function of many parameters and tolerances because of interactions between the storage elements and selection needles. This paper discusses these interactions in detail and describes the needle-stack construction which led to well-defined word currents. It also gives results of full- and half-selection current measurements on two 256-plane stacks.

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Magnetics, IEEE Transactions on  (Volume:9 ,  Issue: 1 )