Abstract: A switching regulator is configured as a fixed-voltage regulator and contains a voltage divider. The voltage divider is supplied with a voltage signal available from a regulator output via a first connection. The voltage divider feds an output signal to the driver circuit functioning as a regulating variable that is compared to a reference voltage. The switching regulator further contains a monitoring device which impinges the driver circuit with a voltage signal exceeding the reference voltage as a new regulating variable depending on the voltage signal applied to the first connection.

Abstract: A switching regulator is configured as a fixed-voltage regulator and contains a voltage divider. The voltage divider is supplied with a voltage signal available from a regulator output via a first connection. The voltage divider feds an output signal to the driver circuit functioning as a regulating variable that is compared to a reference voltage. The switching regulator further contains a monitoring device which impinges the driver circuit with a voltage signal exceeding the reference voltage as a new regulating variable depending on the voltage signal applied to the first connection.

Abstract: A system tests the functionality of a sensor device which is formed by way of at least one sensor element and is connected to a first evaluation unit in order to generate a signal indicating an impact. A second evaluation unit that is connected to the sensor device is provided for testing the functionality of the sensor device. The evaluation units are connected to a central control unit so as to trigger a pedestrian protecting device while being synchronized in such a way that the evaluation units trigger the sensor device in a time-multiplexing mode of operation.

Abstract: The invention relates to a method for inspecting the mechanical fastening of a component including an electrical conductor to a base body including an electric conductor. According to the method, the electric conductors for mechanically connecting the component to the base body such that an electric connection between the component and the base body is formed when a rigid mechanical connection is established, such that the resistance between the conductors is measured and a resistance value which lies below a predetermined value attests the existence of a rigid mechanical connection.