Siemens Aktiengesellschaft

Harris Semiconductor Corporation

Donald Preslar

Gerhard Goeser

Mark Elliott

Franz Allmeier

Theodor Maier

Philip Murphy

A power output stage for switching inductive loads contains a series circuit having a load and a switching transistor. A series connected circuit formed of a blocking diode and a multiplicity of Zener diodes is disposed between the drain and gate electrodes of the switching transistor. A capacitor, a resistor or a series or parallel circuit of a capacitor and a resistor is disposed in parallel with at least one of the Zener diodes. The circuit configuration rounds off the pronounced kink in the drain voltage when the Zener protection cuts in during a switched state of the switching transistor.

Power output stage for switching inductive loads with reduced radiation emission

A circuit arrangement for controlling a load and for recognizing an interruption in a line to the load includes a measuring resistance connected in series with the load, a device for varying a resistance value of the measuring resistance as a function of a current passing through the load, and a diagnostic device for generating a diagnosis signal if a voltage drop, producible across the measuring resistance by a load current drops below a threshold value.

Circuit arrangement for controlling a load and for recognizing a line

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Ringoes, NJ, United States of America

Donald Preslar