R. Thorensen
ABSTRACT
A simple but effective method has been developed for reading information from ferrite storage cores without destroying the information. A single ferrite core containing a small radial hole is used per stored bit. A wire is threaded through the hole and a current pulse is passed down the wire to interrogate the core. The interrogation current temporarily disturbs the residual flux in the core and induces a signal in an output winding. The output signal is unique for the direction of the residual flux and is independent of the direction of the interrogation current.
- fr1 D. A. Buck and W. T. Frank, "Non-destructive Sensing of Magnetic Cores," AIEE Tech. Paper 53-409; October, 1953.Google Scholar
- fr2 A. Papoulis, "The Nondestructive read-out of magnetic cores," PROC. IRE, vol. 42, pp. 1283-1288; August, 1954.Google ScholarCross Ref
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