Draloric Electronic Gmbh

Werner Wollenschlager

Alfred Zeitner

Helmut Hoffmann

Heinz Schlegel

Helmut Weigel

Herman Schmauss

An electric capacitor particularly for use as a high frequency power capacitor, and provided with liquid cooling, the capacitor having separated metal layers as its plates and the metal layers being separated by a densely sintered ceramic dielectric body, one embodiment of which is generally pot-shaped. Heat generated in the capacitor is dissipated by cooling liquid which is directed by a jacket surrounding that one metal layer to pass over the metal layer and dissipate the heat. The metal layer is comprised of a silver frit. To avoid the metal layer being eroded by the cooling liquid, a layer of glaze, which is resistant to the cooling liquid and whose coefficient of expansion is similar to that of the dielectric body covers over the metal layer in contact with the cooling liquid.

Electric capacitor with liquid cooling

An electric capacitor of variable capacitance, including a dielectric body comprised of densely sintered ceramic material, including a hollow space extending longitudinally through the tubular ceramic body for containing dielectric liquid. First and second dielectric liquids of different dielectric constants and densities are contained in the hollow space, and an adjusting cylinder connected to the hollow space adjusts the height levels of the two dielectric liquids in the hollow space for adjusting the capacitance of the capacitor. The hollow space is either longitudinal channels through the tubular body or is a radial space between two concentric tubular bodies which together define the dielectric body. The metal layers of the capacitor plates are respectively on the inside and the outside of the dielectric body.

Electric capacitor of variable capacitance

A capacitor cascade is disclosed comprising a columnar array of ceramic disk capacitors, each consisting of a ceramic disk with metal electrodes on opposite surfaces thereof. A metal electric connecting part is positioned between adjacent capacitors and is in electrical contact with the opposed electrodes. The connecting parts are resilient. The capacitor cascade is secured together. The connecting parts are each comprised of a base part and elements extending from the base part into engagement with the opposed capacitor electrodes. In one embodiment, each connecting part is deformed to define feet extending toward each of the opposed electrodes. In another embodiment, each connecting part is shaped to define tongues and the connecting part is folded into a generally 'S' shape, wherein each tongue engages a respective one of the opposed electrodes. In the latter case, the tongues may be shaped so as to define spacing limitations for limiting the extent to which the tongues may deflect toward each other.

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Marktredwitz, Germany

Werner Wollenschlager