Abstract: A magnetic field sensor device includes at least two magneto-resistive sensor elements and one switch which is connected to the at least two magneto-resistive sensor elements, and makes at least one magneto-resistive sensor element of the at least two magneto-resistive sensor elements electrically connectable into a magnetic field detection arrangement.

Abstract: A storage coil for flux converters or low setting control elements is disclosed. The storage coil has a non-linear d-c bias characteristics associated with a ferrite core. The ferrite core may be a shell core, E core, RM core and U core, with an air gap formed between adjacent end faces of core parts, the adjacent end faces being oriented toward each other to provide a contact area without an air gap less than the overall cross-sectional area of the core and air gap of varying spacing occupying the area remaining between the contact area and the overall cross-sectional area.