Current developments in accurate AC-DC transfer measurements

Author

Klonz, Manfred

Author_Institution

Physikalisch Tech. Bundesanstalt, Braunschweig, Germany

Volume

44

Issue

2

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

363

Lastpage

366

Abstract

Recent improvements in commercial AC instruments have led to worldwide activities in the field of basic standards for AC-DC transfer measurements. Current developments are discussed in this paper. The results obtained with the recently improved single junction and multijunction thermal converters and the “fast reversed DC” experiment show an agreement at the uncertainty level of 10^-7. New thin-film designs offer the possibility of low-cost mass production of highly accurate and sensitive multijunction thermal converter. Improved standards have been developed for the mV-, but also for the high-voltage ranges. At low frequencies the application of the D/A conversion technique for the transfer of DC to AC seems to be advantageous

Keywords

electric current measurement; measurement standards; thermoelectric devices; thin film devices; voltage measurement; AC-DC transfer measurements; D/A conversion; fast reversed DC; mass production; measurement standards; multijunction thermal converters; single junction; standards; thermocouples; thin-film designs; uncertainty; AC generators; Analog-digital conversion; Current measurement; Frequency; Heat transfer; Instruments; Measurement standards; Temperature; Thermoelectricity; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.377853

Filename

377853