Abstract: A sensor, in particular a micromechanical pressure sensor, has two identical capacitive partial structures coupled to an evaluation circuit. In the case of in-phase driving, an additive signal is present as a pressure-dependent useful signal. In the case of in-antiphase driving, a difference signal is present as a diagnostic signal.

Abstract: A power semiconductor component that can be controlled by a field effect has a multiplicity of parallel-connected individual components disposed in cells, the cells are disposed tightly packed on a relatively small space in a cell array. Parallel-connected source zones of the cells have shadowed regions that in each case reduce an effective W/L channel ratio in the cells containing the shadowed regions. The invention has the advantage that because of the provision of the shadowed regions inside the source zones that are preferably undoped or at least doped much weaker than the source zones, the critical regions in the cell array with the highest current density are specifically moderated. Thus the current density in the current-carrying filament of the cell is more homogeneously distributed. This measure renders it possible to reduce the cell grid spacing of the cells in the cell array, or to reduce the forward resistance per unit area, and this leads simultaneously to a reduction in the power loss.

Abstract: A cam-controlled power differential gear transmission for a sheet acceleration system, which is formed of a pregripper having an acceleration course determinable by a control cam driven at a single speed, includes two compensating masses pivotably supported diametrically opposite one another, and respective control cams assigned to the compensating masses, respectively, for controlling the pivoting motion thereof.

Abstract: In order to obtain a simple circuit structure for a measuring device with high measuring accuracy, it is provided that current and voltage signals of a load are fed to a multiplexer and, after digitization, are multiplied by one another. In order to compensate for external angle errors, different waiting cycles are generated between the current and voltage values in the digital signal. A measuring device and a method are provided for this purpose. A preferred application is in electricity meters.

Abstract: A method for manufacturing parts for rotary machines, especially turbine wheel disks, having a hub bore in a hub region, as well as turbine wheel disks manufactured by the method, includes pre-turning a contour at the hub region having a profile differing from a hub contour to be produced. At least the hub region is initially treated. At least the hub region having the pre-turned contour is cooled with a coolant fluid after the initial treatment to produce internal compressive strains in the hub region. The pre-turned contour is reduced after the cooling to the hub contour to be produced.

Abstract: A tube transfer device for transferring usable tubes from a tube feeding device to a tube receiving device includes an elevator advancing tubes in a given transport direction from the tube feeding device to the tube receiving device is steps with pauses between the steps, the elevator having receiver elements for individual tubes, a feeler element movable back and forth transverse to the given transport direction during the pauses, the feeler element passing over usable tubes and pushing unusable tubes out of the receiver elements, and a receiver device adjacent the elevator for receiving the unusable tubes from the receiver elements.