Overvoltage protection for 14V branch of a network of Borno 42V / 14V from a car.

摘要

Overvoltage protection for the 14V branch of a network board 42V / 14V of a car, with a power electronics (LE) for supplying the 14V branch, whose input is connected to the 42V branch, and at least one control unit (SG) connected via a feed line to the 14V branch, characterized in that the control unit (SG) has a switching device (SE) which in case of short circuit switches between 14V branch and the 42V branch supply line to ground, or has a regulating device for short circuit regulates between the 14V branch and the 42V branch supply line to a constant voltage value, and that the switching device (SE) or the control device triggers a fuse (SI) situated in the 14V branch or the 42V branch.