AC-DC difference measurements on thermal voltage converters at NRC

Abstract

Two measurement systems are used at the National Research Council (NRC) of Canada to compare the ac-dc transfer differences 0 of thermal voltage converters (TVC's). One comparator operates from 25 Hz to 1 MHz, and the other from 50 kHz to 100 MHz. The standards for measurement of 0 are groups of multijunction TVC's at low frequency and a calorimetric TVC at high frequency.