1999 Volume 119 Issue 7 Pages 911-912
This paper proposes an rms voltage measurement circuit using a thermal converter (TC), which is controlled so as to operate at a constant temperature. Although the input-output characteristics of TCs do not show simple square characteristics, and more over the characteristics of individual TCs are not identical, the proposed circuit has the feature which is independent of the characteristics of individual TCs. Results showed that this circuit had errors of less than 0.07% for voltages of 100 Hz, 20mV-140mV.
The transactions of the Institute of Electrical Engineers of Japan.C
The Journal of the Institute of Electrical Engineers of Japan