Semiautomatic bridge for high-precision dc resistance measurements on pure metals at low temperatures
- 1 February 1979
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 50 (2) , 161-164
- https://doi.org/10.1063/1.1135798
Abstract
A self‐balancing bridge system with a dc current comparator and a superconducting flux‐gated galvanometer is described. The bridge is capable of measuring small resistances (10−4–10−7 Ω) at liquid helium temperatures with an accuracy of 1 ppm.Keywords
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