mode of operation in which the value of the output is compared with a reference value and in which the difference between those values is used, directly or indirectly, to maintain the output quantity at the desired value with a given uncertainty Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=314-05-01
mode of operation in which the value of the output is compared with a reference value and in which the difference between those values is used, directly or indirectly, to maintain the output quantity at the desired value with a given uncertainty