A bias source for the voltage reference of the BIPM watt balance

Author

Solve, S. ; Chayramy, R. ; Picard, A. ; Kiss, A. ; Fang, H. ; Robertsson, L. ; De Mirandés, E. ; Stock, M.

Author_Institution

Bur. Int. des Poids et Mesures (BIPM), Sevres, France

fYear

2012

fDate

1-6 July 2012

Firstpage

52

Lastpage

53

Abstract

We have developed a programmable current bias source to set the voltage output of a Josephson Voltage Standard that will be operated on the watt balance experiment. The device has been designed to bias separately all of the 13 independent segments of the Josephson array in order to be able to track the induced voltage across the moving coil during the constant velocity and acceleration phases. It is powered from Lithium-ion batteries in order to avoid electrical offsets originating from ground loops and to allow long series of measurements.

Keywords

coils; measurement standards; reference circuits; secondary cells; voltage measurement; BIPM watt balance experiment; Josephson voltage standard array; acceleration phase; constant velocity; electrical offset; ground loop; induced voltage tracking; lithium-ion battery; moving coil; programmable current bias source; voltage reference; Arrays; Batteries; Coils; Current measurement; Standards; Time measurement; Voltage measurement; Josephson Voltage Standard; Programmable Bias Current source; watt balance experiment;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2012 Conference on

Conference_Location

Washington, DC

ISSN

0589-1485

Print_ISBN

978-1-4673-0439-9

Type

conf

DOI

10.1109/CPEM.2012.6250656

Filename

6250656