Capacitance bridge for low-temperature, high-resolution dielectric measurements
M. C. Foote, Andrew C. Anderson · Review of Scientific Instruments · 1987
A stable capacitance bridge has been designed to measure changes both in capacitance and in loss of three-terminal capacitors at temperatures ranging from 0.01 to 100 K. The circuit uses commercially available components, and has a resolution of better than 10−6. Also described is an anomalous voltage dependence present at low temperatures in capacitors which have electrodes applied using an evaporative or similar technique.