A simple resistance network for calibrating resistance bridges

Author

White, D. Rod ; Jones, Keith ; Williams, Jonathan M. ; Ramsey, Ian E.

Author_Institution

Meas. Standards Lab., New Zealand Inst. for Ind. Res. & Dev., New Zealand

Volume

46

Issue

5

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

1068

Lastpage

1074

Abstract

This paper describes a simple, passive, low-cost resistance network, closely related to Hamon build-up resistors, that enables the calibration of dc and low-frequency ac resistance and conductance bridges. The network is configured so that the four component resistors can be connected to realize 35 distinct four-terminal resistances, all interrelated by the usual formulas for the series and parallel connections of resistors. Theoretical analysis and experimental results show that with due care in the design, the network can be readily constructed to achieve an accuracy of better than 1 μΩ for resistances of the order of 100 Ω (1:10⁸) for angular frequencies from dc to 10⁴ rad/s

Keywords

active networks; bridge circuits; calibration; resistance thermometers; switched networks; temperature measurement; 100 ohm; Hamon build-up resistors; accuracy; angular frequencies; calibration; conductance bridges; four-terminal resistances; resistance bridges; resistance network; Bridge circuits; Calibration; Costs; Electrical resistance measurement; Frequency; Laboratories; Resistors; Switching circuits; Temperature measurement; Thermal resistance;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.676712

Filename

676712