Patent application number | Description | Published |
20090261283 | Electromagnetic Valve Which can be Operated with Different Operating Voltages and Method for its Production - An electromagnetic valve is provided with at least one coil containing at least one coil former. The coil former is provided with at least two separate wire windings, of which, in each case, two are connected in series or in parallel with one another. | 10-22-2009 |
20090302868 | Analysis and Compensation Circuit for an Inductive Displacement Sensor - A circuit arrangement for analysis and compensation of the signals for an inductive displacement sensor is provided. The circuit includes a first operating amplifier, a second operating amplifier and a coil for a displacement measurement, in parallel with the second operating amplifier output and the second operating amplifier first input and connected to a capacitance in series with the coil inductance and coil resistance to form an RLC series tuned circuit. In order to improve the accuracy of a measured resonance frequency, the circuit arrangement can be extended with a second coil for a temperature compensation, by connecting a first of the ends of the coil winding to a second end of the coil winding of the first coil and a second of the ends of the coil winding to the second input of the first operating amplifier. | 12-10-2009 |
20100013303 | CIRCUIT CONFIGURATION FOR THE JOINT PULSE WIDTH MODULATION OF VALVES WITH QUENCHING - A circuit configuration is provided for switching valves with joint pulse width modulation and quenching, having a first switch to which a pulse width modulation is applied for controlling magnetic fields of a plurality of valve inductors connected to the circuit configuration; a plurality of second switches by which the circuit configuration is able to be switched between a slow and a rapid quenching of the magnetic fields of the inductors; and a diode which is in the conducting state when the second switches are in a switching state for a slow quenching of the magnetic fields of the inductors, and which is no longer parallel to the inductors when the second switches are in a switching state for a rapid quenching of the magnetic fields of the inductors. | 01-21-2010 |
20100034243 | Circuit Configuration for a Serial Communication With Wake Up Function - A circuit configuration for serial communication includes a first half for receiving and emitting sensing and/or actuating signals; a second half for receiving and emitting sensing and/or actuating signals, a two wire connecting line, which connects bidirectionally the first half and the second half of the circuit configuration; and a wake up switching device for waking up the first and second halves of the circuit configuration out of their standby mode without quiescent current. Independently of the switching state of the wake up switching device, a high level state at the output of a second low pass filter device holds a first switching device in its closing state, and a high level state at the output of a first low pass filter device holds a second switching device in its closing state, as a result of which a self-holding of the supply voltage is guaranteed. | 02-11-2010 |
20100102909 | SOLENOID PLUNGER HOUSING MADE OF METALS OF DIFFERENT MAGNETIC PERMEABILITY - A solenoid plunger housing including at least one electric coil equipped with windings, as well as at least one solenoid plunger cooperating with it, which, as a function of its plunging depth into a coil opening of the coil, brings about a different inductance of the coil. The solenoid plunger, in a radially outer section, is made at least partially of an electrically conductive nonferrous metal, and in a radially inner section, is made at least partially of a ferromagnetic material. | 04-29-2010 |
20100148796 | DEVICE FOR CHECKING THE ATTACHMENT OF A CIRCUIT BOARD ON A CARRIER - A device for checking the attachment of a circuit board on a carrier, in particular a housing, has on each attachment point a pair of mutually associated electrically conductive contact surfaces and an electrically conductive connecting arrangement, which connects the circuit board mechanically to the carrier and at the same time connects the electrically conductive contact surfaces of the respective pair electrically to each other. At least one of the electrically conductive contact surfaces of a pair is situated on the circuit board. The other contact surface may likewise be situated on the circuit board or, for an electrically conductive carrier, even on the carrier. The respective pairs of conductive contact surfaces and the electrically conductive connecting arrangement form an electric circuit, which may be connected in a series circuit or a parallel circuit. An evaluation circuit checks whether the electric circuit thus formed is closed. | 06-17-2010 |
20100277162 | INDUCTIVE DISPLACEMENT OR ROTATIONAL ANGLE SENSOR WITH A SCREENING PLATE ARRANGED BETWEEN TWO COILS - An inductive displacement or rotational angle sensor including at least one electrical coil which is provided with turns, and an influencing element which interacts with said coil and produces a different inductance of the least one coil as a function of its position, characterized in that at least two separate coils which are arranged coaxially with respect to a coil axis and have an axial interspacing are provided, it being possible for the influencing element to enter said interspacing with a degree of overlap, which is dependent on its position, with the magnetic fields which are generated by the coils. | 11-04-2010 |
20110043030 | ARRANGERMENT FOR SWITCHING VALVES IN AXLE MODULES OF A UTILITY VEHICLE - A circuit arrangement for switching two backup valves in a rear axle module of an electronic brake system of a utility vehicle is provided, in which the circuit arrangement includes a switch at which pulse width modulation for controlling magnetic fields of inductors of the two backup valves is applied, and a diode for a slow discharge of the two backup valves in correlation with a predetermined operating state of the two backup valves, in which the diode is connected in parallel with two branches, each containing an inductor of the two backup valves, of the circuit arrangement, and in which the diode switches the two backup valves simultaneously in correlation with the predetermined operating state. | 02-24-2011 |