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

Authors

  • Ling-Xiang Liu Retired from National Metrology Centre of Singapore since Nov. 2008, Corneliusstr. 12, 10787, Berlin, Germany https://orcid.org/0000-0002-2285-1100
  • Zhong-Tai Qian Retired from National Institute of Metrology, 100013, Beijing, China

DOI:

https://doi.org/10.2478/msr-2021-0015

Keywords:

equivalent circuit, revelation, true cause, neglect for 65 years, humidity-effect, multi-layer inductive coils

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.

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Published

13.08.2021

How to Cite

Liu, L.-X., & Qian, Z.-T. (2021). True Cause for Multi-Layer Inductive Coils’ Sensitivity to Ambient Relative Humidity. Measurement Science Review, 21(4), 106–109. https://doi.org/10.2478/msr-2021-0015