Abstract: A current-compensated choke features several current paths and includes several windings that are connected in parallel and wound around a common core. The windings preferably are alternately wound on the core in such a way that windings of a common current path are not arranged directly one on top of another.

Abstract: A current-compensated choke features several current paths and includes several windings that are connected in parallel and wound around a common core. The windings preferably are alternately wound on the core in such a way that windings of a common current path are not arranged directly one on top of another.

Abstract: The invention is directed to a network filter that comprises at least one phase input and a protective conductor in which each phase input is connected via a filter inductance to a corresponding phase output, in which the input side of each filter inductance is connected to the protective conductor via a filter capacitor, and in which an auxiliary inductance is connected between each filter capacitor and the protective conductor, permitting the inductances in the filter to be kept small, potentially realized by simply slipping a ferrite core over a conductor.

Abstract: The invention is directed to a network filter that comprises at least one phase input (L1, L2, L3) and a protective conductor (1), whereby each phase input (L1, L2, L3) is connected via a filter inductance (2) to a corresponding phase output (A1, A2, A3), whereby the input side of each filter inductance (2) is connected to the protective conductor (1) via a filter capacitor (3), and whereby an auxiliary inductance (7) is circuited between each filter capacitor (3) and the protective conductor (1). What the auxiliary inductance (7) achieves is that the inductances in the filter can be kept small, as a result whereof they can be realized by simply slipping a ferrite core on over a conductor.

Abstract: A power-line filter for operation with a converter is provided having a regulated voltage source and sinusoidal phase currents, with the power-line filter helping to eliminate interference voltages particularly in the frequency range from 2 kHz to 150 kHz, which are normally not taken into account. The leakage currents to ground, in this context, can be minimized to the point that it is possible to operate the converter in an (AC/DC sensitive) Interference Filter (IF) protective circuit-breaker.