학술논문
Evaluation of an alternative null detector for adapted Wheatstone bridge
Document Type
Conference
Source
2020 Conference on Precision Electromagnetic Measurements (CPEM) Precision Electromagnetic Measurements (CPEM), 2020 Conference on. :1-2 Aug, 2020
Subject
Language
ISSN
2160-0171
Abstract
The adapted Wheatstone bridge technique has been utilized at the 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.