A linear variable differential transformer (LVDT) is disclosed that has
first and second coil is formed of materials that minimize the Barkhausen
noise, and hence which produces outputs that are substantially
independent of any Barkhausen noise. In an embodiment, the Barkhausen
independence is formed by making the coils of non-ferromagnetic
materials. For example, other materials could be used that have a
material as the core that does not include grain boundaries or does not
include metastable magnetic.