Abstract: A method and apparatus for welding two or more subcomponents together is described. The subcomponents may be welded to one another along seams, whereby sections of the seam that comprise similar materials are heated to a degree suitable for joining together those particular portions of the seam. Other sections of the seam may be heated to a different degree depending upon the material characteristics employed in that section of the seam. Embodiments of the apparatus include features for holding the subcomponents, simultaneously heating seams of each component, positioning the mating subcomponents together, and applying pressure between mating subcomponents to join them together.

Abstract: A method of producing hollow plastic components, such as for air conduction in internal combustion engines, in which two or more molded or hollow body members are manufactured using injection molding technology, are thereupon brought together and are joined together using plastic welding technology.

Abstract: A method and a device for bi-directional transmission of data are provided such that an interface for digital communication on a signal line is obtained which is suited for automotive use. In accordance with the present invention, the following are provided: at least one switchable load unit, the load unit of the temporary transmitter being able to be deenergized prior to transmission of the data; and being able to be reenergized after transmission of the data; in each case at least one switchable current-source unit is assigned to the load unit, the current-source unit of the transmitter being able to be clocked to generate the signals to be transmitted via the communication path; and in each case at least one comparator unit is assigned to the load unit, corresponding output signals being generated at the comparator unit of the receiver from the signals transmitted via the communication path.

Abstract: The present invention describes a device having a housing and at least one electrical component, the housing having at least one of the electrical components and being filled at least partially by a passivating agent. Furthermore, it is provided that the electrical component is covered at least partially by the passivating agent. Now, the crux of the present invention is that an additional material layer is applied on top of the passivating agent. Using this additional material layer, a device is able to be implemented in a simple and cost-effective construction, that is resistive to environmental damages. This makes possible using electrical components in corrosive environments.

Abstract: A method and apparatus for welding two or more subcomponents together is described. The subcomponents may be welded to one another along seams, whereby sections of the seam that comprise similar materials are heated to a degree suitable for joining together those particular portions of the seam. Other sections of the seam may be heated to a different degree depending upon the material characteristics employed in that section of the seam. Embodiments of the apparatus include features for holding the subcomponents, simultaneously heating seams of each component, positioning the mating subcomponents together, and applying pressure between mating subcomponents to join them together.

Abstract: A method of producing hollow plastic components, such as for air conduction in internal combustion engines, in which two or more molded or hollow body members are manufactured using injection molding technology, are thereupon brought together and are joined together using plastic welding technology.

Abstract: A data transmission method and a transmission/reception device are described, the data transmission taking place via intermediate memories without the transmitter receiving direct feedback from the receiver regarding the success of the data transmission. Furthermore, at least one transmission and/or reception device is described which forms an interface between at least two control units and has intermediate memories.

Abstract: A method and a device for activating and/or deactivating distributed control units is described, the microcomputer of a central control unit delivering corresponding activation or deactivation commands to the decentralized control units over an interface module as part of a point-to-point link.

Abstract: A method and a device for bi-directional transmission of data are provided such that an interface for digital communication on a signal line is obtained which is suited for automotive use. In accordance with the present invention, the following are provided: at least one switchable load unit, the load unit of the temporary transmitter being able to be deenergized prior to transmission of the data; and being able to be reenergized after transmission of the data; in each case at least one switchable current-source unit is assigned to the load unit, the current-source unit of the transmitter being able to be clocked to generate the signals to be transmitted via the communication path; and in each case at least one comparator unit is assigned to the load unit, corresponding output signals being generated at the comparator unit of the receiver from the signals transmitted via the communication path.

Abstract: A device for supplying power to a tire-pressure sensor, containing a generator that is corotational with the tire and in which an electric voltage is generated by electromagnetic induction.

Abstract: A micromechanical apparatus, a pressure sensor, and a method, a closed cavity being provided beneath a membrane, the membrane having a greater thickness in a first membrane region than in a second membrane region.

Abstract: A method and a transmission and reception device for data transmission in a distributed system is described, in which a central control unit transmits data simultaneously to all decentralized control units in a broadcast mode. The preferred field of application is a decentralized system for environment sensors in a motor vehicle.

Abstract: A method and a device for activating and/or deactivating distributed control units is described, the microcomputer of a central control unit delivering corresponding activation or deactivation commands to the decentralized control units over an interface module as part of a point-to-point link.

Abstract: A data transmission method and a transmission/reception device are described, the data transmission taking place via intermediate memories without the transmitter receiving direct feedback from the receiver regarding the success of the data transmission. Furthermore, at least one transmission and/or reception device is described which forms an interface between at least two control units and has intermediate memories.

Abstract: A monolithically integrated precision reference voltage source by the bandgap principle, suitable for a wide temperature range, is proposed, in which the parabolic course of the temperature response curve of the reference voltage is linearized by process means available in the monolithic integration, dispensing with additional active components such as transistors or diodes. The precision voltage reference source includes two resistors (21, 22), which are represented by the N-doped emitter diffusion zone.

Abstract: The power supply system for a motor vehicle, includes a battery; a three-phase generator; a connecting line connecting the terminals of the generator and the battery; a rectifier connected electrically to the generator; a voltage regulator for switching an exciter field of the generator on and off to control a voltage actual value at the generator terminals and producing an average field current in the exciter field to maintain a power supply voltage substantially constant regardless of load and speed; and a circuit device for determining and for partially compensating an undesirable direct voltage drop at the generator terminals resulting from a voltage drop in the connecting line caused by load current. The device for determining and for partially compensating is structured to determine an alternating voltage at the generator terminals produced by an alternating current component in the connecting line.