Simple Phase-Sensitive Detector for Wheatstone Bridge Resistance Measurements

TitleSimple Phase-Sensitive Detector for Wheatstone Bridge Resistance Measurements
Publication TypeJournal Article
Year of Publication1985
AuthorsDennis L DiBartolomeo, Joseph H Klems
JournalReview of Scientific Instruments
Volume56
Pagination755-757
Call NumberLBL-18002
Abstract

A simple and economical phase-sensitive detector circuit is described. The circuit, which was developed for use with large-area heat-flow sensors that employ resistance temperature detection, uses a synchronous rectifier driven by a square wave. It is shown that the circuit has good linearity, resolution, and immunity to external and internal noise.

LBNL Report Number

LBL-18002