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

摘要

A telecommunication device has a power-supplying receiving device, and a transmitter device supplied by the receiving device via a current loop for the output of at least one variable measurement value. The measurement value is imprinted on the loop current. The telecommunication device also includes an additional appliance supplied from the current loop. The additional appliance includes a control device for adaptively adjusting its operating voltage relative to the loop current as a function of the current power requirement. The control device reduces the operating voltage up to a minimum operating voltage value upon increasing loop current in a reversed proportional manner to the loop current, and keeps the operating voltage constant in case of a further increase of the loop current in a loop current independent manner.