| 摘要 |
An improved power capacitor dielectric system utilizes the combination of electrode foils (34,35) having a raised dimple pattern on their surfaces, and polypropylene film (36, 37) as the dielectric, the polypropylene film preferably having a texture pattern on one surface. The electrode foil (34,35) suitably comprises a sort annealed aluminum foil strip having a plurality of individual curvilinear surfaced dimple like projections and depressions from the plane of the foil, said projections and depressions being coterminous with the length and breadth of the useful foil surface in an electrical capacitor, said dimple-like projections being formed and spaced apart in a manner whereby there is a smooth essentially continuously curving foil surface leading from one dimple to an adjacent projection so that a point on the base of one dimple and a point on the adjacent base of a projection are essentially coincident. |
