Arrangement for interference suppression of electromagnetic circuits

摘要

The invention relates to an arrangement for interference suppression in electronic circuits. A system is disclosed for electromagnetically shielding electronic devices without mains separation at the input side and which generate high-frequency noise voltages, particularly converter circuits with shielded inputs and outputs electrically separated by transformers and which use filter circuits arranged at the input and output sides. A large-surface printed circuit having surface-wide electrodes on both surfaces is provided between the shielded circuit portion at the mains side and the shielded circuit portion at the output side of the circuit to be shielded. The one electrode of the printed circuit is connected to the shield at the mains side and its other electrode is connected to the device ground allocated to the shield at the output side.