Abstract
A description is given for an automated method for determining dielectric constant and loss by the measurement of the time response of the dielectric to a step voltage. Attention is paid to the circuits necessary to achieve high accuracy (0.1%) and high sensitivity (tan δ=10−5) over audio and subaudio frequencies (104 to 10−4 Hz). These include a 100-V step generator accurate to 5 ppm, a charge detector with a time-independent bias current of 30 fA, and a clock that can control sampling time from 5 μs to 10 s. In addition, a numerical Laplace transform, based on a cubic spline, is described that preserves the accuracy of the time data when they are transformed into the frequency domain.
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Dates
Type | When |
---|---|
Created | 22 years, 5 months ago (March 10, 2003, 1:21 p.m.) |
Deposited | 2 years, 1 month ago (July 1, 2023, 7:24 p.m.) |
Indexed | 2 months ago (June 25, 2025, 4:46 p.m.) |
Issued | 41 years, 7 months ago (Jan. 1, 1984) |
Published | 41 years, 7 months ago (Jan. 1, 1984) |
Published Print | 41 years, 7 months ago (Jan. 1, 1984) |
@article{Mopsik_1984, title={Precision time-domain dielectric spectrometer}, volume={55}, ISSN={1089-7623}, url={http://dx.doi.org/10.1063/1.1137594}, DOI={10.1063/1.1137594}, number={1}, journal={Review of Scientific Instruments}, publisher={AIP Publishing}, author={Mopsik, F. I.}, year={1984}, month=jan, pages={79–87} }