New method for determining time constant of resistors-Reference-Cited by-同舟云学术

New method for determining time constant of resistors

Published:2023-03-01 Issue:3 Volume:94 Page:
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:

Author:

Wang Yicheng¹^ORCID,Jarrett Dean¹^ORCID,Koffman Andrew¹,Schlamminger Stephan¹^ORCID

Affiliation:

1. Quantum Measurement Division, National Institute of Standards and Technology , Gaithersburg, Maryland 20899, USA

Abstract

We report a new method for determining the time constant of ac resistors with values around 10 kΩ using a digital impedance bridge for the comparison of two nominally equal resistors. This method involves adding a probing capacitor in parallel to one of the resistors to induce a quadratic frequency dependence in the real component of the admittance ratio between the two resistors. The magnitude of this quadratic effect is proportional to the self-capacitance of the unperturbed resistor, enabling us to determine its value and the associated time constant with an estimated standard uncertainty (k = 1) of 0.02 pF and 0.2 ns, respectively.

Publisher

AIP Publishing

Subject

Instrumentation

Link

https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0143225/16797731/034711_1_online.pdf

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