Abstract: A drive system drives a switch. The drive system includes: a drive shaft connecting the drive system to the switch; a motor configured to drive the drive shaft; a feedback system; and a controller. The feedback system is configured to: determine at least one value for a position of the drive shaft; and generate a feedback signal based on the at least one value. The controller acts on an operation of the motor depending on the feedback signal.

Abstract: An on-load tap-changer provides uninterrupted diverter switch operation between different winding taps of a tap-changing transformer. The on-load tap-changer includes: a flange module; and a union nut. The on-load tap-changer is configured to be fastened to the tap-changing transformer by the union nut and the flange module.

Abstract: A drive system drives a switch. The drive system includes: a drive shaft connecting the drive system to the switch; a motor configured to drive the drive shaft; a feedback system; and a controller. The feedback system is configured to: determine at least one value for a position of the drive shaft; and generate a feedback signal based on the at least one value. The controller acts on an operation of the motor depending on the feedback signal.

Abstract: A method carries out a switchover of an on-load tap-changer using a drive system. The drive system includes at least one motor which acts on a drive shaft, a control device and an encoder system which is directly or indirectly coupled to the drive shaft. The method includes receiving a signal for switching the on-load tap-changer from the control device; determining by the control device whether switching to a current tap was performed from an upward or downward direction, and whether switching will be performed to a next tap in the upward or downward direction; selecting, on the basis of the determination, one of a plurality of travel profiles for the drive system of the on-load tap-changer, on the basis of which the switchover is carried out; and carrying out and monitoring the switchover by the drive system according to the selected travel profile.

Abstract: An apparatus and a method for locating a mobile terminal, in particular a mobile radio terminal for a cellular mobile radio network by way of an apparatus of a motor vehicle. The mobile terminal sets up a connection to at least one first receiver, while the mobile terminal does not set up a connection to the at least one further one of the receivers at least for this locating operation. Both the at least one first receiver and at least one of the further ones of the receivers each determine a field strength of at least one radio signal transmitted by the mobile terminal or a first receiver. The field strengths thus determined are used to locate to locate the mobile terminal.

Abstract: In a method for cleaning an on-load tap changer (19) in a regulating transformer (20), provision is made for the on-load tap changer (19) to comprise a moving contact (11) and a fixed contact (12); for a cleaning signal to be generated; for the moving contact (11) to be frictionally moved relative to the fixed contact (12) on the basis of the cleaning signal. An on-load tap changer (19) in a regulating transformer (20) comprises: —a moving contact (11) and a fixed contact (12); —a contact drive (17) which is coupled to the moving contact (11); —a control device (18) which is connected to the contact drive (17) and is designed in such a manner that the control device can generate a cleaning signal and can transmit said signal to the contact drive (17); wherein the contact drive (17) is designed in such a manner that the contact drive can frictionally move the moving contact (11) relative to the fixed contact (12) on the basis of the cleaning signal.

Abstract: An apparatus and a method for locating a mobile terminal, in particular a mobile radio terminal for a cellular mobile radio network by way of an apparatus of a motor vehicle. The mobile terminal sets up a connection to at least one first receiver, while the mobile terminal does not set up a connection to the at least one further one of the receivers at least for this locating operation. Both the at least one first receiver and at least one of the further ones of the receivers each determine a field strength of at least one radio signal transmitted by the mobile terminal or a first receiver. The field strengths thus determined are used to locate to locate the mobile terminal.

Abstract: In a method for cleaning an on-load tap changer (19) in a regulating transformer (20), provision is made for the on-load tap changer (19) to comprise a moving contact (11) and a fixed contact (12); for a cleaning signal to be generated; for the moving contact (11) to be frictionally moved relative to the fixed contact (12) on the basis of the cleaning signal. An on-load tap changer (19) in a regulating transformer (20) comprises: —a moving contact (11) and a fixed contact (12); —a contact drive (17) which is coupled to the moving contact (11); —a control device (18) which is connected to the contact drive (17) and is designed in such a manner that the control device can generate a cleaning signal and can transmit said signal to the contact drive (17); wherein the contact drive (17) is designed in such a manner that the contact drive can frictionally move the moving contact (11) relative to the fixed contact (12) on the basis of the cleaning signal.

Abstract: The object of the invention is a device for ultrasonic inspection of cylindrical objects. A transmitting ultrasonic transducer generates ultrasonic waves that are acoustically irradiated into the respective object via a coupling medium. At least three ultrasonic transducers are arranged in a row next to one another along a line. The outer ultrasonic transducers are receiving ultrasonic transducers. The other ultrasonic transducers are transmitting or transmitting/receiving ultrasonic transducers. The line is inclined against the longitudinal axis of the object by an angle which is between 0.degree.and 45.degree..