Patent ID: 8320104
Filing Date: 2012-11-27
Classification: H01G

Abstract:
1. An electrolytic capacitor formed by winding a cathode foil, first and second anode foils and first, second, third and fourth separators each having a belt-like form, and comprising: the cathode foil being wound in a state where a first portion extending from a longitudinally central portion to a first end on one end side is opposed to a second portion extending from said longitudinally central portion to a second end on the other end side, by starting the winding in a predetermined direction from a position corresponding to said longitudinally central portion, the first anode foil being arranged inside said first portion located at an inner side of said wound cathode foil and being opposed to said first portion, the second anode foil being arranged between said first portion located at said inner side of said wound cathode foil and said second portion located at an outer side of said wound cathode foil, and being opposed to said second portion and said first portion, the first separator being interposed between said first portion of said cathode foil and said first anode foil, the second separator being interposed between said first portion of said cathode foil and said second anode foil, said third separator being interposed between said second anode foil and said second portion of said cathode foil, and said fourth separator being arranged outside said second portion of said cathode foil and being opposed to said second portion.