Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Evaluation of an alternative null detector for adapted Wheatstone bridge

Published

Author(s)

Shamith U. Payagala, Alana M. Dee, Dean G. Jarrett

Abstract

The adapted Wheatstone bridge technique has been utilized at National Institute of Standards and Technology (NIST) and other National Metrology Institutes (NMIs) for high resistance measurements. In this work, we evaluate the suitability of a transimpedance amplifier (TIA) as a null detector for the adapted Wheatstone bridge to improve high resistance measurements. Initial resistance measurements using the TIA based null detector showed an order of magnitude improvement in the Type A uncertainty.
Proceedings Title
2020 Conference on Precision Electromagnetic Measurements(CPEM 2020)
Conference Dates
August 22-28, 2020
Conference Location
Denver, CO
Conference Title
Conference on Precision Electromagnetic Measurements

Keywords

High resistance measurement, low-current measurements, resistance standards, transimpedance amplifier

Citation

Payagala, S. , Dee, A. and Jarrett, D. (2020), Evaluation of an alternative null detector for adapted Wheatstone bridge, 2020 Conference on Precision Electromagnetic Measurements(CPEM 2020), Denver, CO (Accessed March 29, 2024)
Created August 23, 2020, Updated September 1, 2020