Patent ID: 6222721
Filing Date: 2001-04-24
Classification: H01G

Abstract:
The regenerable electric capacitor, comprising:wound-on layers of plastic foils;metal-free edge strips respectively arranged on longitudinal sides of the foils; andmetal layers respectively provided on the foils, wherein the metal layers are formed of an alloy having a variable thickness perpendicular to a longitudinal direction of the foils, the thickness of the metal layers being small in regions bordering the metal-free edge strips and increasing towards an opposite side of the foils where each foil has a large thickness, the foils being wound with one another such that given two foils lying on one another the metal-free edge strips are arranged on different frontal sides of the capacitor, the metal layers having a thickness and alloy composition that changes transverse to said longitudinal direction of the foils such that the thickness and the alloy composition vary from the region connected to the metal-free edge strips to the opposite side of each foil, and the metal layers are profiled in stepped form and are formed of a zinc/aluminum alloy such that a weight percentage of the aluminum portion of the alloy increases from a value less than 5% at the small side of each metal layer to a value greater than 10% at the large thickness side of each metal layer.