Abstract: In a system for providing electrical energy for an electronic circuit adapted to supply power to a load, one terminal for a power supply voltage of the circuit is connected to a positive pole of an energy source, and one terminal for ground for the circuit is connected to a negative pole of the energy source via a rectifying electronic component, and a capacitor is connected between the two terminals of the circuit for partial supply of the circuit with electrical energy.

Abstract: A semiconductor fuse for electrical consumers (2) is disclosed, in which a semiconductor switch (3) is disposed between the battery (1) serving as a current- or voltage source and the consumer (2). Parallel to the semiconductor switch (3), there is a short circuit-proof bypass (4) with an integrated wakeup circuit (5), which cooperates with the semiconductor switch (3).

Abstract: A device for rapid short-circuit protection in a power semiconductor is described. It has at least one power semiconductor (10, 38) via which a load current (IL) may be applied to at least one electric load (24). The current detection means (14, 18, 46) provide a measure (VIS) of the load current (IL) applied to the electric load (24). A semiconductor protective circuit (30, 32, 34, 36) triggers the power semiconductor (10, 38) to protective operation in the event of an imminent impairment of the power semiconductor (10, 38).

Abstract: An emergency call device that transmits a distress message independently of damage to the vehicle electronic system, where the emergency call device transmits a first message, which contains at least the geographical location of the vehicle, when sensors detect a critical driving situation, even before an accident has actually occurred.

Abstract: A device for voltage transformation of an input voltage into at least one output voltage is described, which includes at least one switching means (12), a freewheeling switching means (14), and an electrical energy accumulator (16, 18), the freewheeling switching means (14) being triggered for voltage transformation in normal operation. Monitoring means are provided for detecting when the output voltage exceeds a limit voltage, which trigger the freewheeling switching means (14) to limit the output voltage in the event the limit voltage is exceeded.

Abstract: A device for error detection in a multi-voltage vehicle electrical system is proposed having a power distributor (40) that affects the supply of power to at least one electrical load (46) via at least one output (45), having detection means (41, 42, 44) that detect at least one electrical variable at the output (45), and having at least one signal processing unit (44) that compares the electrical variable (54, 56) to at least one limiting value, the detection of an error state being based on this comparison.

Abstract: A device for fault detection in a multivoltage on-board system is described which has at least one detection device, which detects a supply potential (U0) which is supplied to a power distributor (16) for supplying electrical loads (22). The power distributor supplies power to at least one electrical load (22) via at least one output (9). An additional detection device is provided, which detects the output potential (U1) at the output (9). Fault detection means (24) generate a fault signal (26) if the output potential (U1) deviates from the supply potential (U0) by a certain value.

Abstract: A device for locking and unlocking a door lock provided with a door handle on an object, in particular a motor vehicle, has a transmitter unit arranged on the object and a transponder unit assigned to a user. Different methods of operating the device are made possible by designing the door lock as an electromechanical lock which can be locked and unlocked optionally by a manually operable key and/or a button arranged on the inside or electronically by the transmitter and transponder units, and operation is ensured even in the event of a failure of the electric power supply.