DocumentCode
1060135
Title
High-precision AC-DC transfer standards at ETL
Author
Sasaki, Hitoshi ; Takahashi, Kunihiko ; Klonz, M. ; Endo, Tadashi
Author_Institution
Electrotech. Lab., Ibaraki, Japan
Volume
42
Issue
2
fYear
1993
fDate
4/1/1993 12:00:00 AM
Firstpage
603
Lastpage
607
Abstract
A new measurement system is developed in order to re-evaluate the present AC-DC transfer standards of the Electrotechnical Laboratory (ETL). The measurement system consists of a high-precision comparator system and a modified fast-reversed DC source. The AC-DC transfer differences of thermal transfer standards are compared using the comparator system with a resolution better than 1 ppm. The absolute AC-DC transfer differences of single-junction thermal converters (SJTCs) are evaluated in term of a multijunction thermal converter and by the modified fast-reversed DC method. The results obtained by the two methods agree within 1 ppm
Keywords
comparators (circuits); measurement standards; voltage measurement; AC-DC transfer standards; ETL; Electrotechnical Laboratory; digital voltmeter; high-precision comparator; single-junction thermal converters; Analog-digital conversion; Assembly; Frequency estimation; Inspection; Laboratories; Measurement standards; Standards development; Switching converters; Voltage; Watthour meters;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.278635
Filename
278635
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