Abstract: An orthopaedic aid with a reference element, a movement element that is movably fixed to the reference element and a position sensor for determining a position of the movement element relative to the reference element, which comprises at least one permanent magnet and at least three Hall sensors, wherein the Hall sensors are arranged on the reference element and for moving along a trajectory upon a movement of the movement element relative to the reference element, wherein the at least one permanent magnet is fixed to the movement element and wherein the Hall sensors and the permanent magnet are arranged in such a way that a movement of the movement element relative to the reference element and a resulting movement of the Hall sensors along the trajectory causes a linear change in Hall voltage for at least one Hall sensor.

Abstract: A method for operating an electric motor when at a rotational speed below or above a predetermined limit value. The method involves operating an electric motor that has a stator and a rotor, wherein the stator or the rotor has at least three segments each having at least one electromagnetic element. The method includes simultaneously de-energizing all electromagnetic elements of all segments while the rotor rotates, measuring an electrical quantity induced in the electromagnetic elements, in particular an induced voltage, for each segment, and determining a rotor position of the rotor in relation to the stator from the measured electrical quantities. An electrical current can be supplied to the electromagnetic elements such that a segment magnetic field is formed to provide a segment torque to the rotor. The intensity of the electrical current depends on a segment position of the rotor in relation to the segment.

Abstract: The disclosure relates to a method for operating an electric motor. A first method is applied at a rotational speed below a predetermined limit value and a second method is applied at a rotational speed above the predetermined limit value. The first method is a method for operating an electric motor that has a stator and a rotor, wherein the stator or the rotor has at least three segments each having at least one electromagnetic element. The first method comprises the following steps: a) simultaneously de-energizing all electromagnetic elements of all segments while the rotor rotates, b) measuring an electrical quantity induced in the electromagnetic elements, in particular an induced voltage, for each segment, and c) determining a rotor position of the rotor in relation to the stator from the measured electrical quantities.

Abstract: The invention relates to an adjusting device for a prosthetic device, having a drive (1) for adjusting at least one first component of the prosthetic device relative to a second component, wherein the drive (1) is designed as a permanent magnet electric motor and comprises a stator (4) having exciter coils (3) and a rotor (2) having at least one permanent magnet is an armature magnet (5). At least one holding magnet (6) in the form of a permanent magnet is arranged on the stator (4) to form a cogging torque for the rotor (2).

Abstract: The invention relates to an adjusting device for a prosthetic device, having a drive (1) for adjusting at least one first component of the prosthetic device relative to a second component, wherein the drive (1) is designed as a permanent magnet electric motor and comprises a stator (4) having exciter coils (3) and a rotor (2) having at least one permanent magnet is an armature magnet (5). At least one holding magnet (6) in the form of a permanent magnet is arranged on the stator (4) to form a cogging torque for the rotor (2).

Abstract: The invention relates to a potentiometer comprising (a) at least two electrically conducting segments (12), each of which has a contact end (14) that is bordered by a circumferential edge (16) and which adjoin each other in a flush manner by means of one respective section (18, 20) of the edges (16) thereof, and (b) a connecting device (38) for electrically connecting a first contact point (P1) in a first segment to at least one second contact point (P2, P3) in a second segment that is different from the first segment.

Abstract: The invention relates to a potentiometer comprising (a) at least two electrically conducting segments (12), each of which has a contact end (14) that is bordered by a circumferential edge (16) and which adjoin each other in a flush manner by means of one respective section (18, 20) of the edges (16) thereof, and (b) a connecting device (38) for electrically connecting a first contact point (P1) in a first segment to at least one second contact point (P2, P3) in a second segment that is different from the first segment.

Abstract: In an arrangement (1) for the segment-by-segment recording of information signals by at least one rotationally drivable magnetic head (4, 5) in inclined recording tracks (2) on a magnetic tape (3) which can be driven intermittently by a tape drive device (53) while the recording mode is active, the stationary magnetic tape (3) is scanned along an inclined reproducing track (75) which partly overlaps the inclined recording track last scanned (2.sub.n) and the information signal segment (field signal) recorded in the inclined recording track (2.sub.n) is then reproduced. The arrangement includes structure for determining the instantaneous relative position of the inclined reproducing track (75), in the longitudinal direction of the tape, with respect to the inclined recording track (2.sub.n), which is partly overlapped by the inclined reproducing track (75), and for generating position information (LI).

Abstract: A recording and/or reproducing apparatus (1) comprises a record carrier holder (8) into which a record carrier (7) can be loaded in a loading position of the record carrier holder (8) and which is movable by hand from its loading position into a switching position. A drive motor (9) is coupled to the record carrier holder (8) via a drive transmission (10) to move the record carrier holder (8) from its switching position into an operating position. The drive motor (9) supplies at least one generator pulse (GI) when the record carrier holder (8) is moved by hand from its loading position into its switching position, which generator pulse can be detected by a comparator device (17), which in response thereto supplies activation information (AI) to a mode activation stage (20). The mode activation stage (20) is adapted to activate an active mode upon the occurrence of activation information (AI) while the recording and/or reproducing apparatus (1) is in the power saving mode.

Abstract: An apparatus (1) constructed for at least reproducing signals from a magnetic tape (16) extending between two reel hubs (12, 13), comprises a tape-threading device (40), which is movable between a thread-out position and at least one thread-in position, a detection device (129) for detecting whether the tape-threading device (40) has reached a thread-in position, a winding-mandrel driving device (98) for driving two winding mandrels (95, 96) which cooperate with the reel hubs (12, 13), and a braking device, which is movable between a release position and a braking position, by means of which at the end of a thread-in process the winding mandrel (95) can be braked by which the magnetic tape (16) is unwound during this thread-in process.