True Cause for Multi-Layer Inductive Coils’ Sensitivity to Ambient Relative Humidity

Ling-Xiang Liu; Zhong-Tai Qian

doi:10.2478/msr-2021-0015

.blurhash-client-img { display: none !important; }

True Cause for Multi-Layer Inductive Coils’ Sensitivity to Ambient Relative Humidity

Measurement Science Review

Volume 21 (2021): Issue 4 (August 2021)

By: Ling-Xiang Liu and Zhong-Tai Qian

Open Access

|Aug 2021

Abstract

For analyzing the properties of humidity-effect on the measurement of the inductance of multi-layer coils, a formula that establishes an approximate relationship between the coil’s inherent capacitance and interlayer parasitic capacitance has been derived. Such a derivation using the inductor’s equivalent circuit to include humidity effects clarifies the characterization of inductance, after more than half a century of neglect in the literature.

References

[1] Rayner, G.H., Ford, L.H. (1956). The effect of humidity on the stability of inductance standards. In Journal of Scientific Instruments, 33, 75-78.10.1088/0950-7671/33/2/309
Search in Google Scholar Back to article
[2] Liu, L.X., Sim, T.Y., Tan, V.K.S., Chua, H.A., Lam, K.H. (2000). Mathematical model to approximate the response of a Zener cell output under varying environmental conditions. In Metrologia, 37, 213-218.10.1088/0026-1394/37/3/5
Search in Google Scholar Back to article
[3] Liu, L.X., Chua, S.W., Ang, C.K. (2002). High voltage AC-DC difference measurements under humidity step changes. In IEE Proceedings - Science Measurement and Technology, 149 (6), 317-319.10.1049/ip-smt:20020745
Search in Google Scholar Back to article
[4] Liu, L.-X., Li, Z., He, Q., Lu, Z., Zhang, Z. (2021). Common model to approximate the time-variant behaviour of air humidity-change influence on some fundamental standards of precision electromagnetic measurement. In Measurement, 171, 108647.10.1016/j.measurement.2020.108647
Search in Google Scholar Back to article
[5] Qian, Z.-T. (1965, 1975, 1977). The shielding and protection of electrical measurement circuits and apparatus. In Electrical Measurement and Instrumentation, 1-3 (1965), 3-12 (1975), 2-12 (1977). (in Chinese)
Search in Google Scholar Back to article
[6] Liu, L.-X., Qian, Z.-Y., Qian, Z.-T. (2002). Basic theory of shielding protection for electrical measurement circuits. In Chinese Metrology Press, Beijing. (in Chinese)
Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.2478/msr-2021-0015 | Journal eISSN: 1335-8871

Journal RSS Feed

Language: English

Page range: 106 - 109

Submitted on: Apr 11, 2021

Accepted on: Jul 22, 2021

Published on: Aug 13, 2021

Published by: Slovak Academy of Sciences, Institute of Measurement Science

In partnership with: Paradigm Publishing Services

Publication frequency: Volume open

Keywords:

Equivalent circuit,

revelation,

true cause,

neglect for 65 years,

humidity-effect,

multi-layer inductive coils

Related subjects:

Engineering,

Electrical engineering,

Control engineering, metrology and testing

© 2021 Ling-Xiang Liu, Zhong-Tai Qian, published by Slovak Academy of Sciences, Institute of Measurement Science
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 21 (2021): Issue 4 (August 2021)