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Measurement Techniques
Published in: Measurement Techniques 5/2021

19-10-2021 | THERMOPHYSICAL MEASUREMENTS

Bridge Method for Studying the Spectra of Current Fluctuations in Tungsten Filaments in the Frequency Range 1.5·10–5–5·10–1 Hz

Authors: Yu. A. Zakharov, S. S. Gots, R. Z. Bakhtizin

Published in: Measurement Techniques | Issue 5/2021

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Abstract

This article discusses the absence of methods for measuring low-frequency (LF) fluctuation processes at high temperatures and proposes an original bridge method for measuring the spectra of LF current fluctuations in the tungsten filaments of electric lamps in the controlled temperature range 300–2700 K. The application of the bridge measurement circuit reduces the influence of degradation processes in the filament and the power source’s own noise on the measurement results by several orders of magnitude. A spectral analysis of LF current fluctuations is performed in the frequency range 1.5·10–5–5·10–1 Hz using an automated unit based on a personal computer under the control of specially developed software.
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Literature
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Yu. A. Zakharov, S. S. Gots, and R. Z. Bakhtizin, “Study of the spectrum of low-frequency current fluctuations in the filaments of electric lamps,” Izv. Vyssh. Ucheb. Zaved. Radiofizika, 63, No. 3, 250–265 (2020).
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Metadata
Title
Bridge Method for Studying the Spectra of Current Fluctuations in Tungsten Filaments in the Frequency Range 1.5·10–5–5·10–1 Hz
Authors
Yu. A. Zakharov
S. S. Gots
R. Z. Bakhtizin
Publication date
19-10-2021
Publisher
Springer US
Published in
Measurement Techniques / Issue 5/2021
Print ISSN: 0543-1972
Electronic ISSN: 1573-8906
DOI
https://doi.org/10.1007/s11018-021-01942-0

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