Results 271 to 280 of about 64,705 (311)

Current Status of Bacterial Transformations

1955
Publisher Summary When it became clear that a number of plant viruses are crystallizable macromolecules composed of ribonucleic acid and protein, it was possible to attribute to a particular sort of macromolecule the striking biological property of autoreproduction.
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Harmonics in transformer magnetizing currents

Proceedings of the American Institute of Electrical Engineers, 1915
The purpose of this paper is to show in a concise manner the cause and effects of higher harmonic currents in magnetizing currents of transformers. A hypothetical case is analyzed to show the cause of the harmonics; then the schemes of connecting transformers that are commonly used for polyphase transformation are taken up and the effects of the ...
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Computation of accuracy of current transformers

Electrical Engineering, 1940
WHILE the general principles of the operation of current transformers have been known for some time, and tests have provided much experimental data, the introduction of high-speed relaying, especially differential protection, required a greater knowledge of currenttransformer performance than was necessary previously. It is the purpose of this paper to
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Reviewing current transformers and current transducers

2007 Electrical Insulation Conference and Electrical Manufacturing Expo, 2007
The purpose of this paper is to provide a tutorial review of three types of current transducers that are used in instruments and power. The three current transducers that will be discussed are; (1) the ac current transducer; (2) the dc current saturable reactor; and (3) the Hall effect generator with the rugged solid iron core.
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Method of current transformer metrological properties estimation for transformation of distorted currents

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC), 2012
During transformation of power frequency currents inductive current transformers (CTs) are characterized by precise, acceptable in accordance with their accuracy class, values of current errors and phase displacements. CTs catalogues do not specify metrological properties of transformation for distorted currents.
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Operation of inductive protective current transformer in condition of distorted current transformation

2015 Modern Electric Power Systems (MEPS), 2015
In the paper the influence of conductive disturbances on transformation of fault current by inductive protective current transformers is described. Analysis of the results from laboratory studies show, that for such condition primary current up to which the current transformer will comply with the requirements for composite/ratio error is decreased ...
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CURRENT TRANSFORMER, IN PARTICULAR A CURRENT TRANSFORMER FOR AN ELECTRONIC ELECTRICITY METER

1994
This invention concerns a current transformer (10) with a conductor forming an approximately U-shaped loop (11, 39) lying at least approximately in a single plane and through which the current to be measured flows. Located inside the loop is a coil (13) connected to an electronic electricity meter, the windings of the coil lying at least approximately ...
STEPPER & CO, HERRMANN FRANK, RAETSCH OTTO   +2 more
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Pump Current as a Signal Transformation

2010
A signal transformation from cyclic inputs to particle current by a simple stochastic system is studied. The stochastic system describes a simple particle hopping, and it is known that it generates a unidirectional current of particles, so-called “pump current”, under periodic perturbations. We give analytical results using a geometrical phase concept,
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A Survey on Vision Transformer

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023
Hanting Chen, Yehui Tang, Chunjing Xu
exaly  

GasHis-Transformer: A multi-scale visual transformer approach for gastric histopathological image detection

Pattern Recognition, 2022
Chen Li, Ge Wang, Li Xiaoyan
exaly