Rotary (moving) magnet, in particular control magnet

A rotary magnet, in particular control magnet, is described, having at least one coil, an armature, which can perform a limited rotary movement, and a stator, the stator and the armature, too, having poles made of magnetically conductive material. Poles of the stator and poles of the armature form pole pairs, the poles of a pole pair being separated in each case by an operating air gap and, depending on the direction of the coil current and the direction of rotation of the armature, it being possible to cause the poles to overlap to an increasing or decreasing extent. Two magnet systems acting in opposition with regard to the torques produced by them when the coil is energised and each having at least one pole pair and, furthermore, at least one permanent magnet are provided in such a way that permanent-magnetically produced flux levels are superimposed on electromagnetically produced flux levels in the same direction in the operating air gaps of the one magnet system and in the opposite direction in the other magnet system, in order to cause the poles of the pole pairs of the one magnet system to overlap to an increasing extent and those of the other magnet system to overlap to a decreasing extent.