Abstract: A discharge apparatus for an electrical drive arrangement of a vehicle, having an input interface, having an output interface, having a main switching device, wherein the main switching device is connected to the input interface, having a first discharge branch, wherein a first input of the first discharge branch is connected to the main switching device, having a second discharge branch, and having a control device, wherein the control device is designed to connect the first discharge branch in a first discharge state of the discharge apparatus and to connect the second discharge branch in a second discharge state.

Abstract: A method for monitoring an AC voltage source, which is DC-decoupled from a reference potential and which generates an AC voltage between two AC voltage lines. Each of the AC voltage lines is coupled to the reference potential by way of a respective capacitive voltage divider and a respective component voltage signal is tapped at the voltage dividers and at least one root mean square value signal is generated therefrom and a check is carried out to determine whether the respective root mean square value signal meets a predetermined triggering criterion. When the triggering criterion is met, a fault signal is generated.

Abstract: The disclosure relates to a circuit apparatus for controlling a switchable glazing unit. The circuit apparatus has a potential-isolated circuit part configured to generate a periodically alternating drive voltage which has a predetermined first period duration on the glazing unit. The disclosure provides a voltage source, to which the potential-isolated circuit part is connected via a transformer and which is configured to operate the transformer with an AC voltage which has a second period duration shorter than the first period duration, wherein the potential-isolated circuit part is configured to receive the transformed AC voltage from the transformer and, in repeatedly alternating switching phases, to respectively forward only positive half-cycles of the transformed AC voltage to an electrical capacitance of the glazing unit and to forward only negative half-cycles of the transformed AC voltage to an electrical capacitance of the glazing unit by means of a converter device.

Abstract: The disclosure relates to an electronic module comprising a source terminal for receiving an input current from an electrical voltage source and comprising an electrical input capacitance which is effective with respect to the source terminal, wherein the input capacitance is connected to the source terminal via a transistor circuit. The disclosure additionally provides that the transistor circuit is configured to conduct the input current via a respective switching path of at least one transistor, and a control device is configured to switch, during the switch-on process for limiting the input current, a control voltage at a respective control terminal of the at least one transistor, in a plurality of steps, from an off value at which each switching path is switched off, to a connection value at which a contact resistance of each switching path is minimized.

Abstract: A circuit arrangement supplies an electrical vehicle component part of a motor vehicle with an operating voltage, which has a voltage value that is greater than a predetermined limit value for dangerous contact. The circuit arrangement has a source circuit for generating the operating voltage and two line elements for transmitting the operating voltage to the vehicle component part. A reference contact is provided for connecting the circuit arrangement to a reference-ground potential. The source circuit is configured, in order to generate the operating voltage, to generate a first component voltage between the first line element and the reference contact and a second component voltage between the second line element and the reference contact. The difference between the component voltages corresponds to the operating voltage and the component voltages with respect to the reference contact have a voltage value lower than the limit value.

Abstract: A method for monitoring an AC voltage source, which is DC-decoupled from a reference potential and which generates an AC voltage between two AC voltage lines. Each of the AC voltage lines is coupled to the reference potential by way of a respective capacitive voltage divider and a respective component voltage signal is tapped at the voltage dividers and at least one root mean square value signal is generated therefrom and a check is carried out to determine whether the respective root mean square value signal meets a predetermined triggering criterion. When the triggering criterion is met, a fault signal is generated.

Abstract: A circuit arrangement supplies an electrical vehicle component part of a motor vehicle with an operating voltage, which has a voltage value that is greater than a predetermined limit value for dangerous contact. The circuit arrangement has a source circuit for generating the operating voltage and two line elements for transmitting the operating voltage to the vehicle component part. A reference contact is provided for connecting the circuit arrangement to a reference-ground potential. The source circuit is configured, in order to generate the operating voltage, to generate a first component voltage between the first line element and the reference contact and a second component voltage between the second line element and the reference contact. The difference between the component voltages corresponds to the operating voltage and the component voltages with respect to the reference contact have a voltage value lower than the limit value.

Abstract: The disclosure relates to a circuit apparatus for controlling a switchable glazing unit, wherein the circuit apparatus has a potential-isolated circuit part which is configured to generate a periodically alternating drive voltage which has a predetermined first period duration on the glazing unit.

Abstract: The disclosure relates to an electronic module comprising a source terminal for receiving an input current from an electrical voltage source and comprising an electrical input capacitance which is effective with respect to the source terminal, wherein the input capacitance is connected to the source terminal via a transistor circuit. The disclosure additionally provides that the transistor circuit is configured to conduct the input current via a respective switching path of at least one transistor, and a control device is configured to switch, during the switch-on process for limiting the input current, a control voltage at a respective control terminal of the at least one transistor, in a plurality of steps, from an off value at which each switching path is switched off, to a connection value at which a contact resistance of each switching path is minimized.

Abstract: A method and a device for measuring a current flowing through a switch which has an unknown inner resistance and two connections, a voltage difference being measured at the switch. During operation, the current provided by an AC voltage source, which is part of an AC voltage circuit connected in parallel with the switch, is superimposed on the current to be measured, the current flowing through the switch, by way of the AC voltage source. Both the amplitude and the frequency of the current provided by the AC voltage source are known. An AC voltage component of the voltage difference and the amplitude of the component are ascertained, and the current between the connections is ascertained and output proportionally to the amplitude of the current of the AC voltage source.

Abstract: A device for actuating at least one field effect transistor corresponding to a control signal present at a control line, includes at least one driver circuit having a current mirror with an input side and an output side. Both the input side and the output side are connected to a supply voltage, the input side is connected to the control line via a level converter and the output side is connected to the at least one FET.

Abstract: A device for actuating at least one field effect transistor corresponding to a control signal present at a control line, includes at least one driver circuit having a current mirror with an input side and an output side. Both the input side and the output side are connected to a supply voltage, the input side is connected to the control line via a level converter and the output side is connected to the at least one FET.

Abstract: A method and a device for measuring a current flowing through a switch which has an unknown inner resistance and two connections, a voltage difference being measured at the switch. During operation, the current provided by an AC voltage source, which is part of an AC voltage circuit connected in parallel with the switch, is superimposed on the current to be measured, the current flowing through the switch, by way of the AC voltage source. Both the amplitude and the frequency of the current provided by the AC voltage source are known. An AC voltage component of the voltage difference and the amplitude of the component are ascertained, and the current between the connections is ascertained and output proportionally to the amplitude of the current of the AC voltage source.