Abstract: A capacitor comprises an anode foil, a cathode foil, and an intermediate layer interposed between the foils, the capacitor being impregnated with an electrolyte. The surface of the anode foil confronting the intermediate layer is formed with an oxide film. An insulator is provided to maintain at least the anode foil out of contact with the intermediate layer. The intermediate layer comprises a low density capacitor paper impregnated with an electroconductive fine powder such that one surface of the paper contacts the cathode foil with a small potential difference.

Abstract: A feeding device for a printed circuit board comprises a distributed capacity element comprising at least a first conductive strip and a second conductive strip separated from each other by a low loss dielectric layer, leading-out terminals coupled to the first conductive strip, a power source connected to at least one leading-out terminal of the first conductive strip, an electrolytic capacitor connected to the power source, and at least one non-polarized capacitor connected in parallel with the electrolytic capacitor, the second conductive strip being connected to a grounding circuit. A feeding element used in a feeding device comprises the distributed capacity element formed in an oblong shape by folding and coiling up the first and the second conductive strips layered as above-mentioned, and leading-out terminals connected to each of the strips, the element being enclosed in a container or encapsulated by plastic material.