Power supply using the data cables in local networks

摘要

A particularly space saving and cost effective apparatus and method for supplying power to terminals via data lines of a local network with the aid of a method and a device for supplying power from a current sink via two data line pairs of a local network. Decoupling and/or coupling of a supply voltage provided by a voltage source takes place between the central point of two voltage dividers that are arranged between the two data lines of a pair.