Patent ID: 7298141

Claim:
A fluxgate magnetometer, comprising a fluxgate, said fluxgate comprising: at least two cores which are selected from the group consisting of ferromagnetic cores and ferrimagnetic cores; at least two sets of a plurality of windings of an electrically conductive material, at least one set of windings being wound around each of said cores; and an electrically conductive shield enclosing said cores and said windings, wherein the fluxgate has first and second axial ends, the fluxgate magnetometer further comprising: connecting means for electrically connecting the at least two sets of windings and the shield at the first axial end; means for generating a non-DC electric current in said windings; and sensing means for sensing, at or near said second axial end, a voltage between the conductive material of one of said sets of windings, or conductive material connected thereto, and said shield.