Title :
Development of a fast-reversed-dc current source
Author :
Sasaki, H. ; Takahashi, K. ; Klonz, M.
Author_Institution :
Electrotech. Lab., Ibaraki, Japan
fDate :
June 27 1994-July 1 1994
Abstract :
A fast-reversed-dc current source has been developed for the purpose of evaluating the ac-dc transfer differences due to thermoelectric effect of thermal converters. By use of a novel switching scheme, the measurement error due to the increase of the reversing frequency was reduced to less than 1 ppm up to 10 kHz.<>
Keywords :
electric variables measurement; measurement errors; power supplies to apparatus; switching circuits; thermoelectricity; 10 kHz; ac-dc transfer differences; fast-reversed-dc current source; measurement error; reversing frequency; thermal converters; thermoelectric effect; Analog-digital conversion; Circuits; Frequency; Inspection; Interference; Laboratories; Optical switches; Thermoelectricity; Voltage; Watthour meters;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333344
