| 摘要 |
A vacuum capacitor and its manufacturing method are disclosed. The vacuum capacitor comprises: an insulating envelope; a pair of end electrodes, each end electrode being brazed under a non-oxidation atmosphere to a corresponding end of the insulating envelope and being formed together with the insulating envelope to constitute a vacuum vessel; a plurality of cylindrical electrode plates constituting a pair of cylindrical electrodes, each cylindrical electrode plate constituting one of the pair of cylindrical electrodes having a mutually different diameter and being extended along the insulating envelope from an inner surface of the corresponding one of the pair of end electrodes so as to be inserted into a space between the mutually adjacent cylindrical electrode plates constituting the other of the pair of cylindrical electrodes; and a positioning member to position one of the pair of cylindrical electrodes to the other of the pair of cylindrical electrodes in such a manner as to equalize a spatial interval between each cylindrical electrode plate constituting the one of the pair of cylindrical electrodes and that constituting the other of the pair of cylindrical electrodes.
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