Forming a blocking impedance, e.g. to reject power line interference, involves connecting oscillatory circuits resonating at differing frequencies in parallel with load

摘要

Resonant circuit components (3a-c), with impedance are constructed as oscillatory circuits, each operating at a given resonance, where the absolute value of impedance has a local minimum. Resonance frequencies of the oscillatory circuits vary from one to the next. At least one circuit component (4) or load, conducts current at the operational frequency. All these components (3a-c; 4) are connected in parallel.