Results 261 to 270 of about 1,123,144 (299)

Neoclassical tearing mode saturation in periodic current sheets

Physics of Plasmas, 2008
The saturation of Neoclassical Tearing Mode islands in a periodic slab configuration is investigated. Several theoretical models, all based on a generalization of Rutherford’s procedure, that aim at reducing the complete system to a single equation of the magnetic island width, are compared against numerical simulations.
F. MILITELLO, M. OTTAVIANI, PORCELLI, Francesco, PHYS PLASMAS, VOL   +4 more
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Saturation current of miniaturized fission chambers

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009
Abstract We present the detailed formulae of the saturation currents for the four main categories of fission chambers operating in current mode. The results obtained are function of simple parameters: number of fission reactions within the chamber deposits, geometric characteristics of the electrodes and filling gas properties.
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Current Transformer Saturation Effects on Coordinating Time Interval

IEEE Transactions on Industry Applications, 2011
The primary function of protective devices is to remove faulted equipment from the electrical system. It is typically very advantageous for these devices to isolate as small of a section of the electrical system as possible. Overcurrent protection is the most common protection function used, as faulted equipment typically results in a large short ...
Terrence Smith, Richard Hunt
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Current saturation and oscillation in CdSe

Solid-State Electronics, 1969
Abstract Current saturation and oscillations are observed in low resistivity CdSe single crystals without any external illumination over the temperature range from room temperature to 77°K. These observations are explained qualitatively by a phenomenological theory which is developed on the basis of the acoustoelectric effect in piezoelectric ...
S. Yee, A. Kawai, M.L. Neudorfer
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High dynamic PMSM current control by optimal saturation management of current regulators

IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468), 2004
This paper proposes a novel technique for the dynamic output limitation of the current regulators in permanent magnet synchronous motor (PMSM) drives with either isotropic or anisotropic rotors. The saturation strategy is based on a quasi time-optimal control (QTOC) theory, which assures a very fast current response after any demanded current reference
BOLOGNANI, SILVERIO, TUBIANA L., ZIGLIOTTO, MAURO   +2 more
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Contribution of acoustoelectric current to current saturation in piezoelectric semiconductors

Physics Letters, 1966
Abstract A quantitative interpretation of current saturation and of high field domains in piezoelectric semiconductors is proposed. These phenomena arise from acoustoelectric current. The theory is in good agreement with experimental results for CdS. Experimental results for tellurium are discussed.
G. Quentin, J.M. Thuillier
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Saturation Ion Currents to Langmuir Probes

Journal of Applied Physics, 1965
The parabolic variation of saturation ion current with probe potential observed in dense plasmas is fortuitous and is not directly related to the effects of orbital motion. Agreement between measured and computed saturation ion characteristics is illustrated.
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Acoustoelectric Current Saturation in Trigonal Selenium

Physical Review Letters, 1967
Acoustoelectric current saturation has been observed in single crystals of trigonal selenium. The hole drift mobility and its temperature dependence have been determined from this phenomenon. No evidence of a hopping mechanism is found.
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Current related relaying algorithms immune to saturation of current transformers

6th International Conference on Developments in Power Systems Protection, 1997
Current transformers (CTs) supplying protective relays may suffer permanent or transient saturation under severe faults. The majority of protective relays are more or less sensitive to CT saturation. On the other hand, contemporary microprocessor-based relays open the window of opportunity for performing sophisticated checking in order to either ...
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Thermionic saturation of diffusion currents in transistors

Solid-State Electronics, 1972
Macroscopic diffusion theory is not applicable to large percentage variations in carrier concentration over distances comparable to a scattering path length. It is plausible that the transport velocity for thermionic emission over a barrier of zero height constitutes a limit on the velocity of diffusive current flow at any point in a bulk semiconductor.
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