Title :
Determination of the frequency dependence of the AC-DC voltage standard at IEN
Author :
Pogliano, Umberto ; Bosco, Gian Carlo
Author_Institution :
Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
fDate :
4/1/1997 12:00:00 AM
Abstract :
This paper reports on the procedures and devices, some of them of a new type, developed at Istituto Elettrotecnico Nazionale “Galileo Ferraris” (IEN) for the determination of the frequency dependence of the ac-dc transfer standard. The group of multijunction thermal converters used as primary reference standards has been associated with a special converter whose transfer difference has been reduced and evaluated as a function of frequency. A step-up procedure has been introduced for higher voltages, and special range resistors, whose characteristics can be adjusted to be as close as possible to that of a compensated divider, have been designed and tested for voltages higher than 100 V
Keywords :
measurement standards; resistors; voltage measurement; AC-DC voltage standard; Galileo Ferraris; IEN; Istituto Elettrotecnico Nazionale; frequency dependence; multijunction thermal converters; primary reference standards; special range resistors; step-up procedure; transfer difference; transfer standard; Analog-digital conversion; Connectors; Frequency conversion; Frequency dependence; Frequency measurement; Measurement standards; Resistors; Standards development; Thermoelectricity; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on