Results 151 to 160 of about 74,290 (194)
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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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Fluctuation of Contact Voltage During Fretting Phases
2017Due to repetitive micro-displacements, the fretting phenomenon was defined as an electrical and mechanical degradation of the electrical contact interface in telecommunications and more recently in power automotive connectors. Commonly, the electrical degradation was quantified by the increase of contact resistance deduced from the contact voltage ...
El Abdi, Rochdi +4 more
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Determination of the parameters of voltage variation with voltage fluctuation indices
2016 17th International Conference on Harmonics and Quality of Power (ICHQP), 2016A set of parameters that describe the quality of power in power grids includes several measures of voltage variation. Among these measures are the voltage fluctuation indices, composed of magnitude, δU, and rate, ƒ, of fluctuations. This paper provides an example of the use of this measure to reconstruct the voltage changes.
Mateusz Michalski, Grzegorz Wiczynski
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10th IEEE International Conference on Nanotechnology, 2010
We investigate the influence of two traps in close proximity within one nanometer located at the semiconductor/oxide interface (positioned in the middle of the gate width and moved from the source end to the drain end of the channel) on the threshold voltage and the ON-current variation.
Nabil Ashraf +2 more
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We investigate the influence of two traps in close proximity within one nanometer located at the semiconductor/oxide interface (positioned in the middle of the gate width and moved from the source end to the drain end of the channel) on the threshold voltage and the ON-current variation.
Nabil Ashraf +2 more
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Voltage fluctuations and flicker
2001Changes in the amplitude of a voltage for a period which is longer than the period of the voltage under consideration is designated a voltage fluctuation. Such voltage fluctuations can occur once, several times, randomly or regularly. The voltage fluctuation in the form of a jump, a ramp or any quasi course is described by the value of the relative ...
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Assessment of Diagnostic Capabilities of Methods of Recreation of Voltage Fluctuations [PDF]
Voltage fluctuations are one of the most common low-frequency disturbances of power quality. Diagnostics of these disturbances are a complex process because voltage fluctuations affect different loads in different ways.
Piotr Kuwałek
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Assessing Voltage Fluctuations and Lamp Flicker Using RMS Voltages
IEEE Transactions on Power Delivery, 2017Quantifying the effect of voltage fluctuations in power systems using a flickermeter is documented in IEC 61000-4-15. Modern digital implementations of a flickermeter take continuous time voltage samples as inputs to a software processing algorithm which ultimately calculates the short-term flicker severity P st .
Daniel Lee Geiger, S. Mark Halpin
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