Results 221 to 230 of about 316,613 (266)

Voltage-step transient on circular electrodes

Journal of Applied Electrochemistry, 2011
Using the well-known Cottrell asymptote, voltage-step transient (VST) experiments in a two-electrode cell may provide data on the bulk concentration and diffusion coefficient of a working depolarizer, essential for interpretation of liming-diffusion-current (LDC) experiments.
Ondrej Wein, Valentin V. Tovchigrechko
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Accuracy considerations for capacitance estimation by voltage steps in cardiomyocytes

Progress in Biophysics and Molecular Biology, 2020
Electrophysiologists routinely use simple voltage steps to evaluate cell membrane capacitance derived from corresponding current responses. Frequently, the resting membrane voltage Vrest is employed as holding potential for the subsequent command voltage step and more or less accurate methods are utilised to analyse the transient current.
Dieter, Platzer, Klaus, Zorn-Pauly
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Detecting and Avoiding Step Voltage Hazards

IEEE Transactions on Power Delivery, 2015
Uncontrolled flow of electrical current in the earth may have a range of effects, from barely perceptible to dangerous electrical shocks, or unintended electrical heating resulting in fires. This paper promotes awareness of hazards from ground-potential rise and briefly describes the root causes of voltage in the ground. It is proven that the values of
Aikaterini D. Baka, Nikolaos K. Uzunoglu
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Voltage transients elicited by sudden step‐up of auxin

Plant, Cell & Environment, 1984
Abstract It is hypothesized (i) that the molecular mechanism for the reception of friction and flexure and the mechanism by which auxin enhances ethylene production have in common a release of free calcium into the cytosol, (ii) that elevated cytosolic calcium initiates vesicle exocytosis, and (iii) that the vesicles release a factor or set of factors ...
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A Microcomputer Control for Step-Voltage Regulators

IEEE Transactions on Power Apparatus and Systems, 1985
Advances in the state of the art applicable to electronic controls make possible continuing enhancements in these products. The use of microprocessor based digital techniques is the latest advance in a long continuing evolution of products dedicated to the control of step-voltage regulators or load tapchangers on transformers. The fundamental nature of
J. H. Harlow, C. J. LaPlace
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A Thevenin equivalent approach for touch voltage and step voltage

2000
This paper describes numerical algorithm for accurate computing of the touch voltage and step voltage. The algorithm is based on the Thevenin equivalent and grid model of the human's feet.It is practically to use this accurate approach only for some very important points on the earth surface because Thevenin equivalent circuit is valid only for a given
Sarajčev, Ivan, Vujević, Slavko, Kurtović, Mate   +2 more
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Memcapacitor response under step and sinusoidal voltage excitations

Microelectronics Journal, 2014
Recently, mem-elements have become fundamental in the circuit theory through promising potential applications based on the built-in memory-properties of these elements. In this paper, the mathematical analysis of the memcapacitor model is derived and the effect of different voltage excitation signals is studied for the linear dopant model.
Mohamed E. Fouda, Ahmed Gomaa Radwan
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Single-step voltage regulator Application

Electrical Engineering, 1951
THE DESIGN LIMITS of rural distribution circuits usually are determined by permissible voltage drop rather than the thermal limitations of the conductor. Presently overloaded circuits supplying power at inadequate voltage levels are the result of conservative estimates of load growth.
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The modeling and application of step voltage regulators

2009 IEEE/PES Power Systems Conference and Exposition, 2009
Supplying every customer a voltage that is within ANSI standards is a basic requirement of a distribution feeder. As the load on a feeder varies the voltage supplied to every customer will also vary. Some means of regulating the customer voltages must be implemented.
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An alternative approach for touch and step voltages measurement in high-voltage substations

Electric Power Systems Research, 2016
Abstract This paper presents the study of a measurement technique for touch and step voltages. In essence, we elaborate an approach which is very similar to the measurement of the grounding system impedance. In addition, the main focus is on the measurements at energized substation where different types of coupling between the test leads, grounding ...
Kostić, Vojin, Raičević, Nebojša
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