ELECTRICAL LC RESONANT CIRCUIT

Improvements in electric lc-resonant circuits, with narrow limits of tolerance for the resonance frequency, especially for use in channel filters of the carrier frequency technique, which contains a coil and at least one capacitor, characterized in that it is endowed to each circuit of a coil without tuning elements and a tunable capacitor by removing portions of the armature areas, and because the capacitor develops as a regenerative layer capacitor, essentially flat, with a relatively small number of armature faces and superposed dielectric layers. (Machine-translation by Google Translate, not legally binding)