Characterisation of Magnetic Wires for Fluxgate Cores

Orthogonal fluxgate sensors need only a single core and they can be made very small. The main drawback of using magnetic wire excited by AC current through the wire is that the magnetic field in the central part or the wire is small to saturate the material. By increasing the excitation value this area is reduced, but it is still present and creates a region causing unwanted perming effect.