Abstract: The sensor has only a first contact (1) and a second contact (2). In the first step of the method, current is passed through the sensor element (3) while simultaneously measuring the measured variable using a closed switch (4). In a second step, the measured value is then converted into a digital signal in an analogue/digital converter (5) and the digital signal is transformed into a digital output value in a digital switching mechanism (6) which is connected downstream of the analogue/digital converter (5). In a third step, the digital output value is serially sent via the first contact (1) and the second contact (2) with the switch (4) open or closed depending on the binary structure of the digital output value.

Abstract: The invention relates to an angle position sensor, for recording the angular position of a component which may rotate about a rotational axis, including a magnetic ring, fixed to the component coaxially to the rotation axis, magnetised perpendicularly to the rotation axis and surrounded on the outer circumference thereof by a ferromagnetic external screening ring. A magnetic sensor element is further provided, arranged radially and fixed within the magnetic ring. The rotating component is surrounded by an inner ferromagnetic screening ring, arranged coaxially to the rotation axis and approximately radially with relation to the outer screening ring, which is further surrounded by an inner magnetic ring. The inner screening ring and the inner magnetic ring are fixed to the rotating component and the magnetic sensor element is arranged in an annular gap, formed between the outer magnetic ring and the inner magnetic ring.

Abstract: The invention relates to an angle position sensor, for recording the angular position of a component which may rotate about a rotational axis, including a magnetic ring, fixed to the component coaxially to the rotation axis, magnetized perpendicularly to the rotation axis and surrounded on the outer circumference thereof by a ferromagnetic external screening ring. A magnet sensor element is further provided, arranged radially and fixed within the magnetic ring. The rotating component is surrounded by an inner ferromagnetic screening ring, arranged coaxilly to the rotation axis and approximately radially with relation to the outer screening ring, which is further surrounded by an inner magnetic ring. The inner screening ring and the inner magnetic ring are fixed to the rotating component and the magnetic sensor element is arranged in an annular gap, formed between the outer magnetic ring and the inner magnetic ring.

Abstract: The direct drive for a throttle valve shaft in a throttle valve manifold comprises a coil and a rotor arranged directly adjacent to the coil. The rotor is made from a steel ring inside which a first inner magnetic shell and a second inner magnetic shell lie opposite each other. The steel ring has a first outer magnetic shell and a second outer magnetic shell lying opposite each other on the outside thereof. The steel ring is connected to the throttle valve shaft on the end thereof facing the throttle valve. A sensor for position recognition of the throttle valve is arranged in the middle of that region of the end of the steel ring facing away from the throttle valve.

Abstract: The invention relates to a method for the contactless detection of the position of a butterfly-valve shaft of a butterfly valve connecting piece, the butterfly-valve shaft being driven by an electric actuator and having a magnet at one end, which is aligned in a contactless manner with a sensor that is located on a cover. An aim of the invention is to reliably guarantee the detection of the position of the butterfly-valve shaft, even over particularly long periods of time using a contactless position detection device. To achieve this, the sensor has a first and a second magnetoresistive sensor element, an approximately sinusoidal signal being generated in the first sensor element and an approximately cosinusodial signal being generated in the second sensor element by means of the magnet, during the rotation of the butterfly-valve shaft. According to the method, an approximately arc tangential signal is generated in the butterfly-valve connecting signal.

Abstract: The direct drive for a throttle valve shaft in a throttle valve manifold comprises a coil and a rotor arranged directly adjacent to the coil. The rotor is made from a steel ring inside which a first inner magnetic shell and a second inner magnetic shell lie opposite each other. The steel ring has a first outer magnetic shell and a second outer magnetic shell lying opposite each other on the outside thereof. The steel ring is connected to the throttle valve shaft on the end thereof facing the throttle valve. A sensor for position recognition of the throttle valve is arranged in the middle of that region of the end of the steel ring facing away from the throttle valve.

Abstract: The invention relates to a method for the contactless detection of the position of a butterfly-valve shaft of a butterfly valve connecting piece, the butterfly-valve shaft being driven by an electric actuator and having a magnet at one end, which is aligned in a contactless manner with a sensor that is located on a cover. An aim of the invention is to reliably guarantee the detection of the position of the butterfly-valve shaft, even over particularly long periods of time using a contactless position detection device. To achieve this, the sensor has a first and a second magnetoresistive sensor element, an approximately sinusoidal signal being generated in the first sensor element and an approximately cosinusodial signal being generated in the second sensor element by means of the magnet, during the rotation of the butterfly-valve shaft. According to the method, an approximately arc tangential signal is generated in the butterfly-valve connecting signal.

Abstract: The invention relates to a magnetic position sensor in the case of which at least two stator elements are arranged in a magnetic field and a magnetic field probe is located in the measuring air gap between the stator elements, a means tracking a moving object being arranged parallel to the plane defined by the stator elements. A magnetic position sensor which can be produced simply and cost-effectively has a stator element and a magnetic field probe which are arranged on a common supporting element.

Abstract: The invention relates to a magnetic position sensor in the case of which at least two stator elements are arranged in a magnetic field and a magnetic field probe is located in the measuring air gap between the stator elements, a means tracking a moving object being arranged parallel to the plane defined by the stator elements.

Abstract: The invention relates to a magnetic position sensor in which at least two stator elements are arranged in a magnetic field, a magnetic field probe being located in the air gap between the stator elements, a means that follows the movement of an object being arranged parallel to the plane spanned by the stator elements.

Abstract: An operational amplifier includes two differential amplifiers, one of which is driven directly while the other is driven via two potential shifting members. Using a control stage, currents are derived from common differential current output nodes of the differential amplifiers, and are mirrored as a current difference on an output of the operational amplifier. A larger input and output driving range is thus obtained, and the operational amplifier is also capable of operating with a low supply voltage. Furthermore, the operational amplifier can be constructed using a relatively simple configuration and also has an output which is suitable for high-impedance switching.

Abstract: A circuit arrangement includes a differential amplifier having two output terminals for supplying two output signals which each have a signal component which is variable about a reference level and is in phase opposition to the other signal component (push-pull signal). A significant improvement of the common-mode rejection is obtained by means of a control circuit adapted to form a sum signal from the output signals, to form a difference signal from the sum signal and a reference signal, and to control the reference level of the two push-pull signals in dependence upon the difference signal.

Abstract: There is disclosed a plasma burner which has contact protection for protecting the operator against impermissibly high voltage and the burner head itself against destruction. The plasma burner comprises a burner shaft, a nozzle and a nozzle cap surrounding the nozzle, with cooling water flowing between them, a cathode disposed coaxially in the nozzle, a fault current protective circuit and a voltage indicator, disposed over the nozzle cap and insulated therefrom by an air gap is an electrically conductive protective cap.