Abstract: A process and a device are provided for ascertaining the rotation of a liquid spray arm for a domestic appliance. Lighting means serves as a light transmitter and a photoreceiver serves as a light receiver. The lighting means and the photoreceiver are assigned a light-conducting element. At a first location of the light-conducting element, at least some light emitted from the lighting means is coupled to a path so that the light is guided in the light-conducting element by total reflection. At a second location of the light-conducting element that spaced apart from the first location in the direction of propagation of the light, the light guided in the light-conducting element is coupled out of the path so that the light is received by the photoreceiver. The intensity of the light received by the photoreceiver is evaluated by an evaluation circuit with respect to the rotation of the spray arm.

Abstract: A device for adjusting rotation angles, e.g. an electrical rotary switch (1), has a stator (2) and a rotator (3) mounted on the stator (2). The rotator (3) rotates between at least two rotational angle positions. The device has a magnet (4), e.g. a permanent magnet, which can be moved by the rotor (3), and a magnet field sensor (5), e.g. a Hall sensor, which together with the magnet (4) produces a signal which corresponds to the rotational angle position. The stator (2) has a receptacle (8) open on one side and shaped like a pot, with the receptacle (8) forming a rotating bearing for the rotator (3). The magnetic field sensor (5) is arranged in the receptacle (8) on the stator (2) and/or on a part which is mounted on the stator (2), such that the stator is a mount for the magnet field sensor (5).

Abstract: The invention relates to a device for adjusting rotation angles, in particular to an electrical rotary switch (1). The device has a stator (2) and a rotor (3) which is mounted on the stator (2) such that it can rotate, such that the rotor (3) can be moved between at least two rotation angle positions. Furthermore, the device has a magnet (4), in particular a permanent magnet, which can be moved by means of the rotor (3), and a magnetic field sensor (5), in particular a Hall sensor, which is associated with the magnet (4), in order to produce a signal which corresponds to the rotation angle position. The stator (2) has a receptacle (8) which is open on one side and is in particular approximately in the form of a pot, with the receptacle (8) forming a rotating bearing for the rotor (3). The magnetic field sensor (5) is arranged in the receptacle (8) on the stator (2) and/or on a part which is mounted in the stator (2), such that the stator (2) is used as a mount for the magnetic field sensor (5).