DocumentCode
999928
Title
A new power standard for audio-frequency measurements
Author
Zhang, Deshi ; Jia, Yaolan ; Guirong Zhang ; Zhang, Youfeng ; Guo, Fengying
Author_Institution
Nat. Inst. of Metrol., Beijing, China
Volume
39
Issue
3
fYear
1990
fDate
6/1/1990 12:00:00 AM
Firstpage
545
Lastpage
547
Abstract
A thermal power comparator for audio-frequency measurements is presented. It is essentially a double-bridge-type multiplier that consists of two multijunction thermal converters that contain two heaters. Together with a precision inductive voltage divider and current transformer for extending the voltage and current range, the comparator ensured a high-precision power standard with an AC/DC transfer error of less than 15 p.p.m. in the audio-frequency range
Keywords
bridge instruments; comparators (circuits); measurement standards; power measurement; AC/DC transfer error; audio-frequency measurements; current transformer; double bridge multiplier; inductive voltage divider; multijunction thermal converters; power standard; thermal power comparator; Current measurement; Current transformers; Frequency; Measurement standards; Metrology; Power measurement; Reactive power; Resistors; Thermal resistance; Voltage;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.106290
Filename
106290
Link To Document