Abstract: In order to determine the actuation position of a motor-driven adjusting element of a motor vehicle, a Hall-effect sensor is located in a rotatable magnetic field, wherein a periodic change in the magnetic flux density sensed by the Hall-effect sensor is converted into a binary pulse train in that a pulse transition takes place when an upper switching threshold is positively exceeded and when a lower switching threshold separated from the upper switching threshold by a hysteresis is negatively exceeded. The hysteresis is reduced following an inactive phase of the Hall-effect sensor during which the magnetic field was stationary and/or the Hall-effect sensor was deactivated, if the magnetic flux density at the start of the inactive phase has exceeded the upper switching threshold by no more than a predefined tolerance range.
Abstract: An electric-motor adjustment drive is provided for an adjustment element in a motor vehicle, in particular a window lifter, that has a drive module, which includes a pole pot that supports a motor shaft, and having an electronic module having a circuit board, which can be inserted into a housing of a brush holder, which housing is connected to the drive module. The circuit board is retained in an insertion plane perpendicular to the motor shaft by the housing of the brush holder in a form- and/or force-closed manner, wherein a number of contact elements for motor contacting and/or for interference suppression are arranged in the housing, which contact elements are contacted within the housing when the circuit board is inserted.
Abstract: In a method for winding the stator of a multiphase electric motor a plurality of mutually spaced stator teeth are assigned to each phase, wherein all the teeth of the stator are wound without a break in the winding wire, and wherein the winding wire is taken via a contact-making element of a contact-making device before or after the winding of all the stator teeth assigned to a phase.