Abstract: In an electric plug having a plug housing made of plastic, and having at least one plastic injection molded metal insert part provided in the housing, the metal insert part is exposed at at least one housing side, and the plug housing and the metal insert parts are sealed off from each other by a cured sealing compound or adhesive compound, which is provided at the at least one housing side all the way around the exposed metal insert part.

Abstract: An electric motor, in particular a starter device for internal combustion engines in which a current-limiting electric resistor (57) with a negative temperature coefficient is connected at the beginning of the main current path (49) of an electromagnetically excitable rotor (53) of the electric motor (16). The electric resistor (57) contains at least one monocrystalline semiconductor.

Abstract: An integrated microstructure sensor element is proposed for detecting thermodynamic measured variables of a fluid. To that end, a supporting body, particularly a board or a wafer having at least one microstructured heating element in contact with the fluid during operation, is provided, on which or in whose vicinity are arranged first arrangement for at least intermittently acting on the heating element with an electric alternating current of defined frequency or a defined frequency band, as well a second arrangement for detecting the amplitude of the third harmonic wave of the electric voltage applied to the heating element. The proposed microstructure sensor element in the form of a compact, integrated component is suitable in particular for determining or monitoring the thermal conductivity and/or the thermal capacity of a fluid, particularly an oil in a motor vehicle.

Abstract: The circuit device has a contact element, which electrically connects a wave guide (1) with a conductor strip (2). To avoid mechanical stresses due to thermal expansion the contact element is a pre-stressed prefabricated leaf spring having reproducible properties, which is bonded at one contacting area to the wave guide (1) or the conductor strip (2) by electrically conducting adhesive or glue, while a sliding contact is provided on the conductor strip (2) or the wave guide (1) at the other contacting area. The prefabricated leaf spring is preferably a MIGA leaf spring precisely made by UV depth lithography and multiplayer galvanic methods in a batch production process.

Abstract: An electric motor, in particular a starter device for internal combustion engines in which a current-limiting electric resistor (57) with a negative temperature coefficient is connected at the beginning of the main current path (49) of an electromagnetically excitable rotor (53) of the electric motor (16). The electric resistor (57) contains at least one monocrystalline semiconductor.

Abstract: A biochip for electrical, e.g., capacitive, detection of biochemical molecules has an electrode array on a substrate, the electrodes of the electrode array being each connected through the substrate to an electrically conductive contact surface via an electrical conductor. The contact surfaces are situated on the side of the substrate facing away from the electrode array and form the outermost plane of the substrate on this side.

Abstract: A sensor element is provided, in particular an oil condition sensor element, having a sensing area that is in contact with a fluid, in particular an oil. During operation, the sensing area is able to detect a measured variable characterizing a physical and/or chemical property of the fluid. For this purpose, at least some regions of the sensing area have a metal plating or a metallic structure that is applied directly to a plastic surface. In addition, a fluid sensor is provided having a sensor element of the type described above, as well as an additional sensor element that differs from the first sensor element, this additional sensor element being able to detect a measured variable characterizing a physical and/or chemical property of the fluid during operation.

Abstract: A device for determining the boiling point of a hydraulic fluid of a hydraulic system, including an electrical heating element which is situated in the fluid. The electrical heating element acts, in this context, as an actuator of a micropump and is situated in a chamber of same. In addition, a method for determining the boiling point of a fluid of a hydraulic system, using a device having a heating element, in which the fluid is conveyed into a chamber of a micropump with the aid of a heating element, and there it is heated to boiling with the aid of the heating element, after which the boiling point of the fluid is ascertained in the light of the electrical resistance of the heating element.

Abstract: An integrated microstructure sensor element is proposed for detecting thermodynamic measured variables of a fluid. To that end, a supporting body, particularly a board or a wafer having at least one microstructured heating element in contact with the fluid during operation, is provided, on which or in whose vicinity are arranged first arrangement for at least intermittently acting on the heating element with an electric alternating current of defined frequency or a defined frequency band, as well a second arrangement for detecting the amplitude of the third harmonic wave of the electric voltage applied to the heating element. The proposed microstructure sensor element in the form of a compact, integrated component is suitable in particular for determining or monitoring the thermal conductivity and/or the thermal capacity of a fluid, particularly an oil in a motor vehicle.

Abstract: A sensor arrangement for ascertaining physical properties of a liquid is proposed, having electro-acoustical converters (6) on a substrate (5) which are wettable with the liquid and are suitable for generating and detecting acoustical surface waves with predetermined wave modes. A Y-rotated quartz slice is used as the substrate (5), and above the substrate (5) is a waveguide layer (16); the standard of the Y rotation of the quartz slice and the material of the waveguide layer (16) are selected such that an extensive temperature compensation within the range of temperature of the liquid to be investigated is obtained.

Abstract: Electric contacting of a sensor element with at least one terminal contact is described; the sensor element is contacted with a contact part by bonding, and this section has a ceramic adhesive on the section connected to the terminal contact. A method of producing the contacting is also described.

Abstract: A sensor, particularly for determining the oxygen content in exhaust gasses of internal combustion engines, includes sensor element which is fixed in a metallic housing and a sealing flange which is integrally formed on the housing and rests on a sealing seat which is formed on an exhaust system. The sealing flange has two ring elements which are integrally formed on the housing and each have an inclined sealing surface, a hollow space being formed between the two ring elements inside the housing.

Abstract: The arrangement for producing electrical oscillations in a Giga hertz region has a Gunn element, a housing in which the Gunn element is accommodated and which has an electrically conductive housing cover, the Gunn element being in electrical contact with the electrically conductive housing cover, and an elastic, electrical contact element clamped between a contact surface of the Gunn element and the housing cover.

Abstract: A housing for an electronic component has a bottom part, a wall part, a cover part which together are adapted to cover the electronic component, a contact spring provided on the cover part for producing an electrical connection with a terminal of the component, the cover part and the contact spring being formed as a one-piece integral element.

Abstract: A contact element, in particular for making electrical contact to a sensing element of a gas sensor. The contact element has at least one connecting conductor, guided in a metal-sheathed line and contacted to at least one flexible connecting line. A connecting point between the at least one connecting conductor and the at least one connecting line is arranged in a contact housing that allows sealed and temperature-resistance contacting. The contact housing has at least one connecting element that is immovably joined to the at least one connecting line and may be contacted to the at least one connecting conductor. The at least one connecting element is arranged with an interference fit and in a form locking manner in the contact housing. The contact housing is enclosed by a temperature-resistant protective sleeve, which is joined directly to the metal-sheathed line (20,22) and to the at least one connecting line (20, 22).

Abstract: Multiple contacts are provided in an electrical contacting arrangement of a sensor element, and the sensor element has a connection-side section with contact points, or contact pads, which are each integrally bonded to a corresponding contact. Each of the multiple contacts, at least on the section in contact with the contact point on the sensor element, has a layer by which the integral bond is formed between the contact and the contact point on the sensor element. The contacts are joined to the corresponding contact points on the sensor element by diffusion soldering or diffusion welding. Each contact has a curved intermediate section which compensates for thermal and/or mechanical expansion and movements.

Abstract: A measuring sensor, in particular for determining the oxygen content in exhaust gases of internal combustion engines, having a sensor element fixed in gastight fashion in a metal housing (14) and having a sealing flange (60) mounted on the housing (14) and resting on a sealing seat (76) embodied in an exhaust system (11). A union nut (80) is guided over onto the housing (14) and can be screwed into a thread (78) of an opening (70) provided in the exhaust system (11) and presses the sealing flange (60) against the sealing seat (76). The housing (14) has a housing part (12) on the side toward the gas to be measured and a further housing part (13) on the side toward the connection, and the sealing flange (60) is disposed on the housing part (13) on the side toward the connection and is shaped from the material of the housing part (13) on the side toward the connection.

Abstract: A gas sensor having a sensor element which is immobilized in gas-tight fashion in a metal housing. The gas sensor has a double-walled protective tube with an outer protective sleeve and an inner protective sleeve, each of which possesses openings for the entry and/or exit of gas. The inner protective sleeve forms a gas space into which the sensor element projects with a section at the measurement-gas end. The outer protective sleeve is a sleeve having a closed enveloping surface, the openings for the entry and/or exit of gas being arranged in the cavity at the end face of the sleeve. The gas space formed by the inner protective sleeve has, perpendicular to the extension direction of the sensor element, a rectangular cross section.

Abstract: The invention relates to a measuring instrument, particularly an electrochemical measuring sensor, having a sensor element arranged at a measuring point, which sensor element can be connected via electrical connecting leads with an evaluating circuit removed from the measuring point, with the electrical connecting leads being guided so as to be protected against external influences, especially against high temperature influences, at least in the proximity of the measuring point. At its end facing away from the sensor element (12), a protective device (24) receiving the electrical connecting leads (22) is provided with a connecting device (30) which can be connected to a connecting lead (54, 56) to the evaluating circuit.