Mutual inductance bridge for low‐temperature thermometry and susceptibility measurements

We describe a solid‐state mutual inductance bridge suitable for low‐temperature thermometry and susceptibility measurements. The design features an electronically simulated variable mutual inductance. Particular care is taken to reduce spurious capacitive effects. The bridge is highly stable and lin...

Full description

Saved in:
Bibliographic Details
Published in:Review of scientific instruments 1978-11, Vol.49 (11), p.1579-1582
Main Authors: Whitmore, S. C., Ryan, S. R., Sanders, T. M.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We describe a solid‐state mutual inductance bridge suitable for low‐temperature thermometry and susceptibility measurements. The design features an electronically simulated variable mutual inductance. Particular care is taken to reduce spurious capacitive effects. The bridge is highly stable and linear. It has a resolution of 10−4 over the range 15 μH to 150 mH, and a noise limited sensitivity of 55 I p −1 nH with a l‐s time constant, where I p is the rms primary current in mA. Application to thermometry is discussed.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1135314