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Development of an Input Impedance Evaluation of the AC-DC Transfer Standard for Low Level AC Voltage Standard  

Kwon, Sung-Won (한국표준과학연구원)
Jung, Jae-Kap (한국표준과학연구원 기반표준부)
Lee, Sang-Hwa (한국표준과학연구원 기반표준부)
Kim, Myung-Soo (한국표준과학연구원 기반표준부)
Kim, Han-Jun (한국표준과학연구원 기반표준부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.2, 2008 , pp. 229-234 More about this Journal
Abstract
An AC-DC transfer standard(TS) is used for the AC voltage standard in the range of 2 mV to 1000 V below 1 MHz. Micro-potentiometer(${\mu}Pot$) is used to evaluate the ac-dc transfer difference(ADD) of the TS below 200 mV range. The ADD of the TS were changed by the loading effect caused from the input impedance change of the TS depend on frequency. An input impedance evaluation technique of the TS using ${\mu}Pot$ has been developed.
Keywords
Low level AC voltage; Micro-potentiometer; Input impedance; Ac-dc transfer difference; Loading effect;
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