An on-line digital phase sensitive detector in the range 2 mHz-2 kHz
- 1 April 1983
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 16 (4) , 270-277
- https://doi.org/10.1088/0022-3735/16/4/009
Abstract
A digital phase sensitive detector (PSD) has been designed and built which may be used in conjunction with a SQUID-based AC susceptibility measurement system. The system operates in a useful frequency range from 2 mHz-2 kHz and measures both in-phase and the quadrature component. The digital PSD, which is based on a small minicomputer, corrects for DC drift and flux quantum jumps of the SQUID and operates in 'real time'. An analysis of its design and several properties and measuring results are presented.Keywords
This publication has 1 reference indexed in Scilit:
- Microcomputer based phase sensitive detectorJournal of Physics E: Scientific Instruments, 1981