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Analysis of Voltage Fluctuations in Power Networks
IEEE Transactions on Instrumentation and Measurement, 2008Voltage fluctuations analysis is one of the basic elements of power quality assessment in the power network. Presently, two voltage fluctuations measures are used-voltage fluctuations indexes and short-term Pst and long-term Plt flicker severity indicators. The voltage fluctuations indexes describe the variability of the root-mean-square (rms) value by
Grzegorz Wiczynski
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Dependence of Voltage Fluctuation Severity on Clipped Sinewave Distortion of Voltage
IEEE Transactions on Instrumentation and Measurement, 2021The article presents the novel findings on the dependence of voltage fluctuation severity on voltage distortion caused by power electronic loads. The results indicate the need to modify the recommended limitation of the IEC flickermeter bandwidth to cut-off frequency at least 450 Hz by the IEC standard, to consider the possible obnoxious voltage ...
Piotr Kuwalek, Grzegorz Wiczynski
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Voltage Fluctuations of Neural Membrane
Nature, 1967THE resting membrane potential of the frog Ranvier node shows fluctuations for which, between 1 and 10,000 rad/sec, the power/cycle of bandwidth is inversely proportional to frequency (1/f noise), and for frequencies of less than about 1 rad/sec there may be an increase in the negative slope of the plot of log noise power against log frequency1,2. This
A A, Verveen, H E, Derksen, K L, Schick
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Voltage Fluctuations in Neurons: Signal or Noise?
Physiological Reviews, 2011Noise and variability are fundamental companions to ion channels and synapses and thus inescapable elements of brain function. The overriding unresolved issue is to what extent noise distorts and limits signaling on one hand and at the same time constitutes a crucial and fundamental enrichment that allows and facilitates complex adaptive behavior in an
Yarom, Yosef, Hounsgaard, Jorn
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Spontaneous Voltage Fluctuations in Glass Microelectrodes
IEEE Transactions on Biomedical Engineering, 1971The spontaneous fluctuations of voltage across a glass microelectrode have been studied as a function of the average difference in voltage (V) across the electrode and the concentration of internal (n 2 ) and external (n 1 ) salt solutions. A stationary fluctuation was observed, with a mean square value many times greater than that calculated from the ...
L J, DeFelice, D R, Firth
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Analysis of transient voltage fluctuations in FPGAs
2016 International Conference on Field-Programmable Technology (FPT), 2016Due to recent technology scaling trends and increased circuit complexity, process and runtime variabilities are becoming major threats for correct circuit operation. Among these, transient voltage fluctuations appear to be the most critical issue, accounting for the biggest component of timing margin, at increased cost.
Dennis R. E. Gnad +3 more
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Voltage fluctuations in small conductors
Physical Review B, 1987The mean-squared voltage fluctuations of an ensemble of disordered conductors, measured between probes less than an inelastic scattering length apart, are independent of the separation of the probes. The mean-squared fluctuations of the conductance can exceed ${e}^{2}$/h by many orders of magnitude. To obtain these results, it is essential to take into
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Voltage Fluctuations in a Diode
Physical Review, 1968A thermodynamically consistent microscopic model is used to derive a Fokker-Planck equation governing voltage fluctuations across a diode in the limit of small electron charge. In going to this limit, strong nonlinearities in the diode current characteristic are allowed to persist for voltages in the range of the thermal fluctuations.
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Fluctuations of High Voltage Impedance
2020A 59-year-old man with ischemic cardiomyopathy had a single-chamber Medtronic Entrust™ ICD and Sprint Fidelis™ Model 6949 dual-coil true bipolar lead implanted over 2 years ago after out-of-hospital VF. His NYHA Class is III and left ventricular ejection fraction is 34%.
Paul A. Friedman, Charles D. Swerdlow
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Voltage Fluctuations in Lamps and Ballasts
IEEE Industry Applications Magazine, 2011This article shows that lamp aging has a significant correlation with flicker generation. In this research work, a test system and a methodology able to measure optical fluctuation produced by different types of lamps and ballast are presented. This experimental platform provides a correlation between voltage flicker levels and optical flicker ...
Francisco Azcondo +8 more
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