Abstract: A method is provided for electrically driving a motor having a plurality of phase windings such that EMC (electromagnetic compatibility) is improved and the running performance of the motor is simultaneously kept constant. At least one of the phase windings is not supplied with a current pulse during a complete revolution of the rotor, or at least one switchable electrical resistor is switched on, for at least one subsequent commutation phase by means of an electrical switching element, if the detected rotor speed is greater than the specified target speed.

Abstract: The invention relates to a method for producing a pre-tinning arrangement on a conductive surface, wherein, for a temporally and/or spatially subsequent soldering process, a soldering tin preform or a soldering tin round blank having a predefined three-dimensional shape is connected to the conductive surface in a captive and transportation-stable manner. For this purpose, the soldering tin preform or soldering tin round blank is fixed onto the conductive surface by means of a tacking solder, wherein the melting temperature of the tacking solder is below the melting temperature of the soldering tin preform or soldering tin round blank.

Abstract: The invention relates to a fan unit, having an air guide tube and a fan grate, wherein an air channel is formed by the air guide tube and the fan grate is arranged over a first end opening of the air guide tube in order to protect a fan wheel that can be arranged within the air guide tube. In order to improve such a fan unit in such a way that vibrations can be reduced in a simple and effective manner, at least three damping elements are arranged between the air guide tube and the fan grate in order to reduce vibrations.

Abstract: In order to give an especially compact, cost-effective and electromagnetically compatible design to a cooling device with a heat sink and a radial fan arranged in or on the receiving area of the heat sink, the bushing is adhesively bonded onto the heat sink in or on the receiving area, or the bushing is integrally designed with the heat sink.

Abstract: A method is provided for electrically driving a motor having a plurality of phase windings such that EMC (electromagnetic compatibility) is improved and the running performance of the motor is simultaneously kept constant. At least one of the phase windings is not supplied with a current pulse during a complete revolution of the rotor, or at least one switchable electrical resistor is switched on, for at least one subsequent commutation phase by means of an electrical switching element, if the detected rotor speed is greater than the specified target speed.

Abstract: The invention relates to a fan unit, having an air guide tube and a fan grate, wherein an air channel is formed by the air guide tube and the fan grate is arranged over a first end opening of the air guide tube in order to protect a fan wheel that can be arranged within the air guide tube. In order to improve such a fan unit in such a way that vibrations can be reduced in a simple and effective manner, at least three damping elements are arranged between the air guide tube and the fan grate in order to reduce vibrations.

Abstract: In order to improve an adjusting device (100, 100a) for electrically adjusting a headrest position in such a way that the entire adjusting device (100, 100a) can be arranged inside of the headrest, so that the adjusting device (100, 100a) can be made more cost effective and reliable in design, it is proposed that an electric motor be movably arranged relative to a spindle (10, 10a), such that a rotary movement of a rotor of the electric motor induces a translational movement (15) of the electric motor along the spindle (10, 10a), or that a rotary movement of a rotor of the electric motor induces a translational movement (15) of the spindle (10, 10a).

Abstract: In order to give an especially compact, cost-effective and electromagnetically compatible design to a cooling device with a heat sink and a radial fan arranged in or on the receiving area of the heat sink, the bushing is adhesively bonded onto the heat sink in or on the receiving area, or the bushing is integrally designed with the heat sink.