US 5,962,934 AGranted

Arrangement for electrical power supply

AssigneeTemic Telefunken microelectronic GmbH

InventorsGunter Fendt, Peter Hora

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Abstract

An arrangement for supplying electrical power to at least one load arranged along a power supply line, preferably in motor vehicles, is characterized by having a power supply facility that has at least one input for a supply voltage and at least one output for the supply voltage and a testing device, by the testing device being designed to test an output for the supply voltage to establish whether a short-circuit, i.e. a resistance of too low a value, exists at this output, and by the power supply facility having a switching device and being designed in such a way that a supply voltage fed to it is switched through by the switching device to the output tested by the testing device only when the test has established the non-existence of a short-circuit. This allows the power supply to be maintained if a single fault occurs.

Claims11

Dependent claims

Electrical power supply system, which comprises,

a power supply line, a plurality of loads connected to the power supply line along its length, and a central unit, having an output connected to one end of the supply line supplying current to the loads;
and wherein the central unit, for supplying current to the loads, and each of the loads, for supplying current to downstream loads, each have:
a power supply unit having at least one input for a supply voltage and at least one output for the supply voltage connected to the supply line;
a testing device connected in parallel with the respective output for testing the respective output for the supply voltage to determine whether a resistance of too low a value is connected to the respective output, indicating a short circuit at the respective output;
and
a circuit, including a switching device connected between the respective input and output of a respective power supply unit, for controlling the respective switching device to feed a supply voltage fed to a respective input of the respective power supply unit to the respective output tested by the testing device when the test establishes that there is no short-circuit.

3 more elements

Dependencies are inferred from the claim text.