Power-supply device for electrical components which are installed in a motor vehicle

Abstract

Power-supply device for 12-volt electrical components which are installed in a motor vehicle, in particular for components of the lighting or indicator system, from an electrical-energy source (E2) the voltage of which is higher than the rated voltage of 12 volts of the components, which are usually protected by a normal protection network when they are powered by a source at their rated voltage. The device includes elements (D1, C, Dz) which are identical or similar to those of a normal protection network placed at the head end of the 12 volt input of an electrical component (1), which are combined with a minimum number of additional active components (T) so as to produce a basic regulated power supply at 12 volts, which further ensures protection of the electrical component (1) which is equivalent to that of the normal protection network.

Dependencies are inferred from the claim text.