Abstract: The invention relates to a fuel cell system with high-temperature fuel cells, in which some of the heat of the gases flowing out of the anode and cathode is used to that end. The gases that the flow into the anode and cathode are brought to a temperature that is required for operation of the fuel cells and is still tolerable for the cells, having an anode and/or cathode loop. It is provided that for the anode and/or cathode loop, at least that time-referred quantity of reaction gases that is required for attaining the electrical output of the fuel cells is furnished.

Abstract: A method and device for electrically connecting enameled wire ends with contact surfaces. The enameled wire is stripped and pressed against the contact surface. The wire is charged with at least one of an electromagnetic and an acoustical energy. The enamel layer of the wire end is destroyed with the first energy in a first step. This is accomplished by charging the region with at least one of a first electromagnetic energy and a first acoustical energy. The enamel layer of the wire end is only partially destroyed in the first step through the pressing of a region of the wire end against the contact surface with a first pressing force. The wire is permanently connected to the contact surface with a second energy in a further step. The same region of the wire is pressed against the contact surface with a second, lower pressing force in the subsequent process step. It is charged with a second energy and connected to the contact surface so as to conduct electricity.

Abstract: The invention relates to an arrangement for high-frequency opaque shielding of walls, or portions thereof, of a housing, wherein the walls or their portions include a plate-form basic element (12) having a shielding function, with, if appropriate, wall prongs (16) projecting from these into the housing, and wherein in at least one side margin region (14) extending perpendicularly to the front face (18) of the basic element, extend a first groove (20) with sidewall (24, 26) disposed in the proximity of or remote from the front face as well as a groove bottom (28) into which a first prong (42), U-form in section, of a spring element (40) can be emplaced which with a further prong (48) extends in regions along the side margin region.

Abstract: A track-guided transport system with power and data transmission and used for conveying goods. The transport system is provided with a transport element having drive and track-guide elements; storage, input and output units for goods; and a data processing and transmission unit. The transport element is provided with a transmission head as a secondary element for transferring power from a primary circuit laid along the track, the transmission head is mounted on the vehicle comprising a ferrite core and a secondary winding surrounding the core and magnetically is coupled to the primary circuit. An adjustable and controllable drive unit may be provided for forward motion; and a device may be provided for the forward motion for low-friction compensation of gravity and to ensure low-friction sliding along a track, as well as track-guide elements.

Abstract: The invention concerns a process to correct the intensity of images from a digital infrared camera with a two-dimensional detector. First a stationary correction is made at a reference source to determine correction coefficients. For the stationary correction, an average intensity characteristic curve U.sub.av (T) is determined for the detector and compared with the intensity characteristic curve U.sub.j (T) for each image point j of the two-dimensional detector to determine correction coefficients for each image point j. A non-linear formulation is used to adapt the intensity characteristic curve U.sub.j (T) of each image point to the average intensity characteristic curve U.sub.av (T). Correction coefficients are stored in a memory to correct the individual intensity U.sub.j of each image point j during operation. During operation, the correction coefficients are improved dynamically. The intensity Uj of an image is recorded and the intensity Uj of the image is filtered by a locally acting adaptive filter.

Abstract: A switch having a contact lever and a compression member connected so as to bias the contact lever into a contact position. The contact lever includes a joint-receiving opening disposed therein. A bearing is insertable into the joint-receiving opening of the contact lever and supports a pivot which forms a connection between the compression member and the contact lever. The joint-receiving opening includes two portions configured one behind the other in the direction of compression of the compression member. The bearing is insertable into the first opening portion in a direction different from the direction of compression and then movable in the direction of compression to produce an interlock connection with the second opening portion of the opening.

Abstract: The invention relates to an actuator for operating a signal transmitter comprising a shaft rotatably mounted in a housing, a motor rotating the shaft to operate the signal transmitter as a function of position, a portion of the shaft having a first recess, a sleeve surrounding the shaft having a second recess, a ball element spring biased in one recess, the ball element operating the signal transmitter when the position of the first and second recess coincide.

Abstract: An arrangement is disclosed for ensuring an uninterrupted current supply to at least one electrical consumer which draws energy from an alternating voltage network and is supplied with energy in the event of a network failure by a fuel cell. The fuel cell (8) is connected at its electrical outputs to at least one current inverter (7) whose output is connected to the minimum of one alternating voltage consumer (1, 2) and to a branch containing a switch (4) on the consumer side of the switch; the switch is connected to an alternating voltage network (6) and is opened in the event of the voltage in the alternating voltage network falling below a predetermined level and closed if the alternating voltage is above that threshold; and the fuel cell operates in stand-by mode if the network voltage is above the threshold, and, if voltage is below the threshold, in a mode in which the energy required by the consumer is supplied via the current inverter (7).

Abstract: The invention relates to an apparatus for the guiding of workkpieces (2) which has at least one curved guideway (11, 12) and which renders automatic emptying simple. This is achieved according to the invention by a guide device (16, 17) which can be adjusted in the guide path provided by the curved guideway (11, 12) and which in the state adjusted into the guide path transfers the workpieces (2) in a straight line from the inlet (50) of the curved guideway (11, 12) to its outlet (51).

Abstract: An earth-leakage circuit breaker has a totalizing current transformer, a magnetic trip device and switchgear with main current contacts for the main leads. A current-signal generator, a current sensor, a time-signal generator and an electronic timer wherein the switching value and response time of the circuit breaker are measured at predetermined intervals, compared with reference switching values and response times and, if these reference values are exceeded, an alarm is promptly given. During the measurement, a locking device prevents the main current contacts from opening and/or when predetermined limiting switching and response times are exceeded, the locking device opens the main current contacts and subsequently acts as a lock preventing the contacts from closing again, which is equivalent to fail-safe behavior. In addition, the switching value of the circuit breaker is multiplied by its response time and the product, which may exceed a particular constant value, is used for monitoring purposes.

Abstract: A grid arrangement with a plurality of control grids with a layered design with ceramic spacers for a cathode ray tube. The grid arrangement can be manufactured in a simple manner and reliably with high precision even in the case of very small dimensions. Very low grid capacity can be reached by structuring the conductor layers.

Abstract: A process for preparing a phosphor layer of a cathode ray tube. To prepare a phosphor layer located on the display screen rear side of the cathode ray tube, the display screen rear side is first coated with an electrically conductive electrode layer consisting of electrically conductive polymers; a solution containing the phosphors or their precursors as well as a solution containing an electrolyte are deposited on the electrode layer; an electric field is applied between the electrode layer and the solution; and the phosphors are electrophoretically deposited on the electrode layer to form the phosphor layer. Since polymers with an evaporation temperature below the destruction temperature of the phosphors are selected, the electrode layer can subsequently be removed by evaporating the polymers.

Abstract: The subject matter of the invention is a process for controlling a multiplicity of spray tools for the surface coating of vehicles or parts thereof. With stored program control, the settings for the multiplicity of spray tool which determine the paint flow through each tool are issued centrally to the control elements associated with the spray tools. The trajectory points for the tools, which are stored with coarse spacing or obtained by coarse interpolation from already stored trajectory points, are applied as reference values to the attitude controllers serving each spray tool; from the said position controllers, additional trajectory points are determined by fine interpolation between the transmitted trajectory points and processed in the position controller by means of actual position values.

Abstract: A method for automatically coating objects with a spraying device which includes at least one atomizer that is moved along paths determined by programs. For respective objects or segments of objects, which essentially differ with respect to the dimensions, a program is provided which is modified as a function of the length of the respective object or segment, which length is allocated to a direction of a Cartesian coordinate system, for predetermining the path of the atomizer in the direction of the length of the object. By means of dimension data that are inserted into the program, the paths to be followed by the atomizer are constantly adapted along the predetermined path in at least one direction that extends at a right angle to this direction.

Abstract: A totem pole output stage including first and second control modules cross coupled to first and second switching modules for measuring the charge on the gate of a FET contained in the opposing switching module to determine the condition of the opposing switching module, so as to avoid mutual conductivity events without the use of a fixed timing delay while maximizing switching performance.

Abstract: A testing instrument including a display element and two control paths that are separately activated. The display element has a display field shaped like a lightning bolt or zigzag and has at least three partial display fields which follow successively in a longitudinal direction of the display element. Each of adjoining partial display fields is connected to a different one of the two control paths.

Abstract: A process for introducing or displaying the adjustment parameters of a device for coating objects, particularly vehicles and vehicle bodies. The parameters are introduced on or off-line by a personal computer and displayed on the monitor graphically and alphanumerically in a manner which provides a survey of a series of parameters in mutual relationship.

Abstract: A grid electrode for a cathode ray tube includes a ceramic carrier lamina having a thickness of up to about 0.5 mm and opposite lamina surfaces; a throughgoing aperture defined in the carrier lamina by a wall portion thereof extending between the lamina surfaces; and a metallized surface portion forming part of one of the lamina surfaces. The metallized surface portion is situated in a zone of the aperture.