Title :
A thermal power comparator based on the push-pull techniques
Author :
Park, Y.T. ; Yu, K.M. ; Song, Y.S.
Author_Institution :
Korea Res. Inst. of Stand. & Sci., Taejon, South Korea
Abstract :
In this paper a thermal power comparator based on the push-pull techniques of sum-and-difference circuit is proposed. The power measurement by mean of push-pull techniques can reduce an error of unidentical thermal converters, and an error for the deviation from the parabola characteristics of heaters in thermal converters. It is shown that the uncertainty of the comparator can be obtained better than 30 ppm in the input frequency range from 40 Hz up to 1 kHz.
Keywords :
Comparators (circuits); Instrumentation amplifiers; Measurement errors; Measurement standards; Power measurement; 40 Hz to 1 kHz; input frequency range; parabola characteristics; power measurement; push-pull techniques; sum-and-difference circuit; thermal power comparator; uncertainty; Abstracts; Circuits; Frequency; Instruments; Power measurement; Resistors; Switches; Switching converters; Thermal resistance; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850861
