Abstract: In an adjustable vacuum condenser, in which two interengaging electrode systems are arranged in a vacuum-tight housing, the upper electrode system of which is displaceably connected with the cover of the housing via a set of bellows serving as current feed, the interfering self-inductivity is reduced by adapting the outside diameter of the set of bellows and the inside diameter of the electrically conducting jacket surrounding the set of bellows to one another.

Abstract: An energy absorbing mechanical end stop for a high speed gear train that is used to drive a variable vacuum capacitor utilizes a friction plate that is mounted to a gear member of the high speed gear train as an energy absorbing mechanism. A wedge member is activated when the tuning of the variable vacuum capacitor approaches a limit and falls between the friction plate and the gear member to which the friction plate is attached. The friction between the friction plate and the wedge member brings the gear member to a stop without damaging the high speed gear train or the variable vacuum capacitor that is driven by the high speed gear train.

Abstract: A method for manufacturing variable capacitance pressure transducers and an intermediate article of manufacture produced in the practice of this method. In the method, a wafer of doped silicion or other semiconductor material has portions of the semiconductor material removed from spaced areas to form a plurality of recesses in the surface of the semiconductor material. The material is doped to enhance its electrical conductivity. A dielectric material has one of its surfaces coated with spaced areas of electrically conductive material. The semiconductor material is attached to the coated surface of the dielectric material such that the surface recesses in the semiconductor material are in alignment with the conductive areas on the dielectric material. This produces a plurality of electrical capacitors suitable for use as pressure transducers.

Abstract: The present invention relates to a condenser for high power and with a gas shaped dielectric and preferably intended for tank circuits in high frequency generators and radio transmitters. The electrodes of the condenser consists of two metal tubes (1 and 2) with different diameters and located concentrically relative to each other. Those tubes are at both ends gas tight connected to each other so that a space is formed by the air gap between the tubes (1,2) which space can be filled with gas under pressure. The space inside the tube (2) with the smallest diameter is open and can be used for a transmitter tube to be located therein.

Abstract: An electric capacitor containing a winding of paper and/or synthetic dielectric foils and metallic coatings and having at least one winding which is disposed in a sealed gas-tight housing containing an excessive pressure safety system and filled with an impregnation fluid, such as mineral oil, up to a predetermined buffer volume. In accordance with the invention, the impregnation fluid is saturated with an electro-negative gas and the buffer volume in the housing likewise is filled with such gas in an amount which assures a pressure higher than the normal pressure but, lower than the response pressure for the safety system.

Abstract: A capacitor comprising at least two electrodes separated from one another by an elastic dielectric formed of rubber and/or plastic for measuring forces acting upon one of the electrodes--the so-called measuring electrodes--by detecting the resultant change in capacitance. The dielectric in its unloaded state is pre-compressed and preferably possesses a number of hollow spaces.

Abstract: A method for manufacturing variable capacitance pressure transducers and an intermediate article of manufacture produced in the practice of this method. In the method, a wafer or doped silicon or other semiconductor material has portions of the semiconductor material removed from spaced areas to form a plurality of recesses in the surface of the semiconductor material. The material is doped to enhance its electrical conductivity. A dielectric material has one of its surfaces coated with spaces areas of electrically conductive material. The semiconductor material is attached to the coated surface of the dielectric material such that the surface recesses in the semiconductor material are in alignment with the conductive areas on the dielectric material. This produces a plurality of electrical capacitors suitable for use as pressure transducers.

Abstract: A variable electric capacitor has two electrode units consisting of a plurality of plates or a single spirally wound plate with several turns. The plates or turns have opposite lateral edges, one of which is free and the other is fixed to a support. The plates or turns of the two electrode units are interleaved and to change their mesh, one electrode unit is movable relative to the other. Each electrode unit has locating elements for the free lateral edge of plate or turn of the other electrode unit. These locating elements adjoin the supports of the electrode unit concerned and are formed to hold the free lateral edge of each plate or turn of the other electrode unit in a predetermined position when both electrode units are in their maximum mesh position.