Robert Boschgmbh

Huf Hülsbeck & Fürst Gmbh Co.kg

Alfmeier Prazision Ag Baugruppen Und Systemlosungen

Karl-Heinrich Preis

Robert Kern

Thomas Weigold

Kay Kolberg

Martin Kessler

Stefan Koch

Rainer Neumann

Gerhard Lindae

Klaus Eckert

Lothar Borho

Gerhard Decker

Cornelius Peter

Erich Dörfler

Gunter Lothar Schulze

Gerhard Knecht

Peter Kusserow

Wolfgang Schwenk

Joerg Sutter

Thomas Mohr

Thomas Riehemann

Uwe Schaper

Guenter Spiegel

Bernd Lieberoth-Leden

Gerhard Kolberg

Harald Buhren

Friedrich Schmied

Bodo Remus

Jurgen Stein

Ernst Damerau

Tilman Spingler

Fred Delb

Bernhard Worner

Dieter Sieber

Gunter Hege

Christian Jager

Hans-Jurgen Schneider

Bernd Klumpp

Karlheinz Jansen

Holger Pr&uuml;ssel

Jorg Holzberg

A device to adjust a contour of a vehicle seat with contour adjustment, may include at least one air cushion connected to a pump via a supply line, a first valve for opening and closing the supply line, and a control and evaluation unit to determine an air volume being supplied to the at least one air cushion via an operating time of the pump and to correlate the air volume being supplied to the at least one air cushion with a contour of the vehicle seat. A related method for adjusting a contour of a vehicle seat with contour adjustment equipped with such a device, may include determining an air volume being supplied to the at least one air cushion via the operating time of the pump, and the air volume being supplied to the at least one air cushion is correlated with a contour of the vehicle seat.

Device and method for adjusting a contour of a vehicle seat with contour adjustment

A method for controlling the tire pressure in multiple axle vehicles whose wheels are equipped with pneumatic tires and speed sensors that supply an evaluation unit with signals indicative of the speed of the respective wheel, by

Method for controlling the tire pressure in multiple-axle vehicles

The invention relates to a control circuit for a direct current motor with a reverse pole protection device, which is connected to the electric circuit of the electrolytic capacitor and the free-wheeling diode in order to reduce losses in the reverse pole protection device.

Control circuit for a direct current motor

A method is proposed for influencing the electrical power of a load with the assistance of a pulse-width modulated signal, the latter including the requirement of a continuous turn-on signal. The method provides that the continuous turn-on signal is terminated by an interrupt signal and that the continuous turn-on signal is followed by a clock-pulse phase having at least one fundamental period duration of the pulse-width modulated signal, the period including a turn-off time. The occasional interruption of the pulse-width modulated signal, which is present as the continuous turn-on signal, makes it possible to detect an operational quantity of the load that only arises during a power change in the load.

Method for influencing the electrical power of a load with a pulse width modulated signal

An arrangement for detecting the condition of a high pressure gas discharge lamp when switched on is described, where a control unit either injects a defined current into the lamp and measures the resulting voltage drop, or it applies a defined voltage to the lamp and measures the lamp current flowing in so doing and, depending on the result, it starts the lamp according to the condition of the lamp thus determined.

Arrangement for determining the state of a high-pressure gas discharge lamp on switching-on

A control circuit for a direct-current motor driven in a clocked manner, includes an electrolytic capacitor connected in parallel and free-wheeling diode. Spurious radiation is reduced, in that a choke is connected between the positive motor supply voltage and the plus terminal of the electrolytic capacitor, and that the free-wheeling diode is disposed with its cathode between the choke and the electrolytic capacitor, and with its anode on the negative side of the d.c. motor.

Control circuit for a dc motor

In an arrangement for detecting pinching situations in electric drives, provided in particular for window and sunroof openers in motor vehicles, the voltage induced in the armature of the motor is used, the induced voltage being determined from the voltage across the motor terminals and the current flowing in the armature, in particular as the difference between the voltage across the motor terminals and the product of the armature current by the armature resistance which is obtained periodically whenever possible. The armature resistance is obtained from the voltage across the motor terminals and the blocking current of the motor, the latter being determined by extrapolation of the armature current determined at a certain point in time. The armature current is measured using a shunt resistor and optionally amplified, and the current signal obtained is averaged using a microcontroller-controlled integrator with adjustable, computed integration periods, and digitized using an analog-digital converter.

Arrangement for detecting jamming situations in electric drives

Process and circuit arrangement for determining the speed of a D.C.

Circuit for controlling a motor with a device for recognizing an overload

Device for operating a gas discharge lamp to produce output potentials

Fixed-cycle power-supply circuit with an at least temporarily active

Circuit for supplying current

A circuit arrangement for converting a DC voltage into another DC voltage, with simultaneous regulation of the emittable voltage (U.sub.A) at a predetermined value. The circuit arrangement includes a combination of an upward and a downward transformer having at least one switching transistor (3) connected in series with a common memory coil (1) to a circuit output terminal, and a smoothing capacitor (5) connected in parallel to the output load (6), i.e., across the output terminals. The coil (1) is connected for a specific time to the supply voltage source (U.sub.Bat) by a time function circuit (9, 10). The coil (1) is connected directly to the positive pole (+) of the supply-voltage source (U.sub.Bat), and a current limiter circuit is provided in the long or forward branch of the circuit arrangement in front of the output of the circuit arrangement, with the current limiter circuit comprising a resistor (4) and a transistor (15) and influencing the switching transistor (3) disposed in the long branch. In addition to a first voltage limiting circuit formed of a series connection of a resistor and a Zener diode (16, 17), a further voltage limiter circuit (18, 19) is provided in parallel with the first voltage limiting circuit as short-circuit protection, with the further limiter likewise comprising the series connection of a resistor (18) and a Zener diode (19) which, however, has a different breakdown voltage than the first Zener diode (17).

Circuit arrangement for converting a DC voltage into another DC voltage

Clocked power supply

A method is proposed for monitoring a computer network having at least two subscribers connected via a databus comprising at least two lines, said subscribers having in each case one receiving component and/or one transmitting component. The method is characterized by the fact that the functioning of the databus and/or the functioning of the subscriber is monitored with the aid of error detection signals (watch-dog signals, CEI) of at least one subscriber, and emergency operation measures (M1; M2), matched to the respective error case, for setting defined emergency modes of operation (single-wire mode, special emergency mode) are taken. After taking the first emergency operation measure (M1), it is tested whether the computer network is functioning free of errors. If this is the case, the first emergency operation measure is maintained and thus also the emergency mode of operation (single-wire emergency mode) adopted. If further errors should arise in the computer network after the first emergency operation measure has been taken, the first emergency operation measure is cancelled and the second emergency operation measure (M2) is taken. If, from now on, no further errors arise, the emergency operation mode, the special emergency mode, set by this measure is maintained. Only if further errors continue to arise are the affected subscribers or the entire computer network switched off (bus-off).

Monitoring a computer network

Growing community of inventors

Buehlertal, Germany

Karl-Heinrich Preis