Abstract: A filter circuit for reducing feedback of a consumer on an energy supply is disclosed. This filter circuit includes a multipolar input, a line choke, and a multipolar output, wherein the input is configured to receive an AC voltage from the energy supply, wherein the output is configured to be connected to the consumer, wherein the line choke includes one coil for each pole of the input, and wherein the coils of the line choke are each connected between one pole of the input and one pole of the output and energy is transferred from the input to the output and/or vice versa. A resonant current suppression (RCS) group is connected in parallel to a coil of the line choke to transmit resonant currents arising at the line choke such that voltage increases generated by the resonant currents are reduced or suppressed by the at least one RCS circuit.

Abstract: A filter circuit for reducing feedback of a consumer on an energy supply is disclosed. This filter circuit includes a multipolar input, a line choke, and a multipolar output, wherein the input is configured to receive an AC voltage from the energy supply, wherein the output is configured to be connected to the consumer, wherein the line choke includes one coil for each pole of the input, and wherein the coils of the line choke are each connected between one pole of the input and one pole of the output and energy is transferred from the input to the output and/or vice versa. A resonant current suppression (RCS) group is connected in parallel to a coil of the line choke to transmit resonant currents arising at the line choke such that voltage increases generated by the resonant currents are reduced or suppressed by the at least one RCS circuit.

Abstract: A protective circuit for an inverter is disclosed, the protective circuit comprising a safety element, a switching arrangement, and a control circuit, with the safety element being arranged in a feed line to the power element, and the switching device being switched to the safety element such that the switching arrangement bridges the safety element when the switching arrangement is in a conducting state. The control circuit is embodied such that it, upon receipt of one control pulse or several successive control pulses, emits a switching signal to a switching arrangement for a predetermined period of time, with the switching arrangement being switched through in case of periodic receipt of the control pulses and with the absence of the control pulse opening the switching arrangement after a predetermined period of time, and triggering a protection of the inverter by the safety element.

Abstract: A protective circuit for an inverter is disclosed, the protective circuit comprising a safety element, a switching arrangement, and a control circuit, with the safety element being arranged in a feed line to the power element, and the switching device being switched to the safety element such that the switching arrangement bridges the safety element when the switching arrangement is in a conducting state. The control circuit is embodied such that it, upon receipt of one control pulse or several successive control pulses, emits a switching signal to a switching arrangement for a predetermined period of time, with the switching arrangement being switched through in case of periodic receipt of the control pulses and with the absence of the control pulse opening the switching arrangement after a predetermined period of time, and triggering a protection of the inverter by the safety element.