| 摘要 |
1,167,055. Electrolytic capacitors. P. R. MALLORY & CO. Inc. 2 May, 1967 [2 May, 1966], No. 20259/67. Heading H1M. Electrolytic capacitors are manufactured by dispensing deposits 64 of powdered film-forming metal on to appendages extending from foil 63 of the same metal, heating to fuse the deposits to the appendages, sintering the deposits, forming a dielectric oxide over the deposits and foil by anodizing, masking the foil, applying a semiconductive coating over the deposits and appendages, e.g. by pyrolysis of manganese nitrate, applying a counter-electrode over the semi-conductive coatings, attaching anode leads to the appendages at points away from the semiconductive coating, attaching cathode leads to the counter-electrodes, and severing the necks of the appendages to form individual capacitors which may subsequently be encapsulated. The powder may be applied as drops of a slurry in a liquid carrier and the appendages may be cupped to hold the deposits. The fusing may be carried out continuously (Fig. 9, not shown). As shown, a length of foil bearing the fused deposits is supported on a frame for batch sintering, but continuous sintering may also be employed. |
