Robert Boschgmbh

Klaus Dressler

Andreas Koch

Udo Schulz

Rainer Burkel

Wolfgang Krampe

Ralph Bauer

Wilhelm Eyberg

Peter Pfeffer

Albrecht Schwarz

Engelbert Tillhon

Torsten Henke

Andreas Werner

The invention relates to a circuit arrangement () for a control device, and a method for operating said circuit arrangement (). The circuit arrangement () comprises a first field-effect transistor () actuating the control device, and a comparator, which compares the voltage provided for actuating the control device with a threshold voltage, and which actuates a timed operation of the first field-effect transistor () via a control unit () if the threshold voltage is exceeded.

Circuit arrangement for a control device

Device for controlling at least one electromagnetic load

A device and a process for activating at least two electromagnetic loads, in particular solenoid valves for controlling the amount of fuel to be injected. The load is connected to a voltage source through a bridge circuit. Furthermore, devices for stepping up the voltage are connected in parallel with the voltage source.

Device and process for activating at least two electromagnetic loads

A device for regulating a voltage drop across a load, particularly an electromagnetic load, includes an actuator connected in series with the load, a ground and a supply voltage. A first current balancing circuit provides an actual current which corresponds to the voltage across the load. A current source establishes a desired current. A second current balancing circuit provides a signal for actuation of the actuator as a function of a comparison of the actual current with the desired current, the actuator thereby regulating the voltage across the load.

Device for regulating a voltage drop across a load

Measuring device for detecting a differential angle of rotation or

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Lochgau, Germany

Klaus Dressler