Mehrspannungsbordnetz für ein Fahrzeug

摘要

The invention relates to a multi-voltage electric system, comprising a generator and a voltage regulator, wherein the voltage regulator regulates the output voltage of the generator to given values by influencing the exciting current. Two rectifier circuits are connected in parallel with the generator, said circuit leading to terminal (B1+) and terminal (B2+) respectively. At least the rectifier circuit leading to the terminal with the lower voltage is embodied in the form of a controllable rectifier and is controlled by the voltage rectifier in such a way that the desired voltage (UB1+) is generated. The other rectifier circuit leads to terminal (B2+) in which a higher voltage is generated by appropriately regulating the exciter current. The controllable rectifier circuit preferably comprises six MOS field effect transistors.