Vehicle voltage supply

摘要

One embodiment provides a vehicle voltage supply having a vehicle battery, a load with two voltage supply connections, a fuse in a path between the vehicle battery and one of the voltage supply connections of the load, and a clamping circuit transistor. The clamping circuit transistor can be switched in such a manner that the clamping circuit transistor produces a short circuit between voltage supply connections of the load in order to activate the fuse. An energy store is set up to store the energy needed to drive the clamping circuit transistor when producing the short circuit, and a charging circuit is set up to charge the energy store at least during the time in which the clamping circuit transistor does not produce a short circuit.

主权项

1. A vehicle voltage supply comprising:
a vehicle battery; two voltage supply connections for a load; a fuse in a path between the vehicle battery and one of the voltage supply connections of the load; a switchable clamping circuit transistor configured to produce a current path between the voltage supply connections of the load to activate the fuse; an energy store for storing the energy needed to drive the switchable clamping circuit transistor when producing the current path; and a charging circuit for charging the energy store at least while the switchable clamping circuit transistor does not produce the current path.