Improvements in AC-DC voltage transfer at Inmetro

Abstract

Abstract In this paper we present the development of a second set of thermal converters, coaxial resistors and micropotentiometers, used as standard for AC-DC voltage transfer. The new set was fully characterized for AC-DC voltage transfer by step-up and step-down procedures, starting from one PTB calibrated thermal converter. An internal comparison was made between this new set of standards and the main set of standards and the results obtained are consistent.