Experimental Study of the Spectral and Correlation Characteristics of Low-Frequency Fluctuations in Tungsten Filaments

Low-frequency current fluctuations in tungsten filaments are experimentally studied in a frequency interval of 6 × 10 –5 –1 Hz. The experiments are carried out at heating temperatures of the filaments of 2250 and 2450 K. It is shown that visually different waveforms of the low-frequency (LF) noise a...

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Bibliographic Details
Published in:Journal of communications technology & electronics 2022-10, Vol.67 (10), p.1216-1223
Main Authors: Zakharov, Yu. A., Gots, S. S., Bakhtizin, R. Z., Sharipov, T. I.
Format: Article
Language:English
Subjects:
Autocorrelation functions
Communications Engineering
Engineering
Filaments
Networks
TO THE 85th ANNIVERSARY OF N.I. SINITSYN
Tungsten
Waveforms
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Summary:Low-frequency current fluctuations in tungsten filaments are experimentally studied in a frequency interval of 6 × 10 –5 –1 Hz. The experiments are carried out at heating temperatures of the filaments of 2250 and 2450 K. It is shown that visually different waveforms of the low-frequency (LF) noise are characterized by relatively similar power spectral densities represented as 1/ f γ , while the mean value of parameter γ ranges from 1.6 to 2.0. As distinct from the spectral characteristics, the autocorrelation functions are significantly more diverse. The correlation time, positive correlation time, and anticorrelation time of the LF fluctuations are numerically estimated.
ISSN:1064-2269
1555-6557
DOI:10.1134/S1064226922100175