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A gamma-level portable ring-core magnetometer

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1 Author(s)
S. Marshall ; University of Missouri, Rolla, Mo.

A four-transistor circuit is described for a battery operated magnetometer that has 0.1γ resolution using 1-in diameter 4-79 or 6-81 Mo-Permalloy tape cores of 20-40 Mx capacity. The center-tapped drive winding also serves as the sense winding, simplifying the sensor assembly. Some signal-to-noise results are presented to illustrate the fairly wide difference that may exist between cores of the same cross section and to demonstrate the advantage of reducing core area.

Published in:

IEEE Transactions on Magnetics  (Volume:7 ,  Issue: 1 )