Calculable thermal AC voltage standards for 10 kHz–1 MHz frequency range

This paper describes two calculable thermal AC voltage standards developed at the Silesian University of Technology (SUT) in Gliwice, Poland. The design and mathematical model of these standards made possible calculation of their AC-DC transfer differences with very low uncertainty, comparable to the uncertainty of the best available calculable AC voltage standards in 10 kHz-1 MHz frequency range. The correctness of results of the AC-DC transfer difference calculation was also confirmed experimentally.