TELECOMMUNICATION DEVICE HAVING A LOOP-SUPPLIED DEVICE AND METHOD FOR THE OPERATING VOLTAGE SUPPLY THEREOF

摘要

The invention relates to a telecommunication device having a power-supplying receiving device (4) and a transmitter device (1) supplied by the receiving device (4) via a current loop (3) for the output of at least one variable measurement value, wherein the measurement value is imprinted on the loop current, comprising a further device (2) supplied from the current loop (3), and a method for the operating voltage supply thereof. For this purpose the invention provides that the device (2) is equipped with control means (11, 12) for the adaptive operating voltage adjustment relative to the loop current as a function of the current power requirement, said control means reducing the operating voltage (Uw) up to a minimum operating voltage value upon increasing loop current in a reversed proportional manner to the loop current, and keeping the operating voltage (Uw) constant in case of a further increase of the loop current in a loop current independent manner.