Results 1 to 10 of about 7,995,389 (202)
Research on Distribution and Morphology of Primary Si Under the Effect of Direct Current [PDF]
Archives of Metallurgy and Materials, 2021 A source of pure silicon was added into an alloy refining system during a refining process with the application of a direct electric current. The effect of the temperature difference between the graphite electrodes and the alloy was decreased.
Jiayan Li +4 more
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Study on current-sharing characteristic of multi-pillar parallel arresters for DC transfer switch
Energy Reports, 2023 Ultra high voltage direct current (UHVDC) system is the key support of power grid, which has an important impact on the development of China’s power grid.
Zhendong Yang +5 more
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Ultra-fast hybrid systems for protecting direct current circuits with high magnetic energy [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021 The article presents a new generation of ultra-fast hybrid switching systems (USH) for reliable, ultra-fast protection of various medium and low voltage DC systems (MVDC and LVDC). The DC switch-off takes place in a vacuum chamber (VC) cooperating with a
Marek Bartosik +2 more
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Frontiers in Bioengineering and Biotechnology, 2022 Since the piezoelectric quality of bone was discovered in 1957, scientists have applied exogenous electrical stimulation for the purpose of healing. Despite the efforts made over the past 60 years, electronic bone growth stimulators are not in common ...
Peter J. Nicksic +12 more
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Sensors, 2023 Brushless synchronous machines (BSMs) are replacing conventional synchronous machines with static excitation in generation facilities due to the absence of sparking and lower maintenance.
Miguel A. Pardo-Vicente +3 more
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On kinetics of superconducting state destruction in a nonlinear coplanar waveguide based on a high-temperature superconductor film [PDF]
Радиофизика и электроника, 2021 Subject and Purpose. The mechanism of destruction of the S-state of a nonlinear high-temperature superconductor as part of a coplanar waveguide has not been properly elucidated as the effect of avalanche-type transition to a highly dissipative state ...
O.A. Lavrinovich, M.T. Cherpak
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IEEE Access, 2021 The number of devices either providing or demanding direct current is growing more and more. This led to the renascence of DC grids and revealed a need for research. One critical component is the DC circuit breaker.
Dirk Bosche +5 more
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AC/DC Current Sensor for Rotating Applications
Sensors, 2020 There are several techniques for current measurement. Most of them are capable of measuring both alternating and direct current (AC/DC) components. However, they have severe drawbacks for rotating applications (large size, sensitivity to external fields,
Miguel Angel Pardo-Vicente +3 more
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On the calibration of direct-current current transformers [PDF]
, 2014 Modern commercial direct-current current transformers (DCCT) can measure currents up to the kA range with accuracies better than 1E-5. We discuss here a DCCT calibration method and its implementation with commercial instruments typically employed in low ...
Callegaro, Luca +2 more
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Design and verification of a wide range and high precision electron gun system
He jishu, 2022 BackgroundGrid-controlled electron guns mostly use mesh grid and extract pulsed beam current; there is little research on the wide-range direct current beam.PurposeThis study aims to design a wide-range high-accuracy direct current electron gun to meet ...
ZHANG Haowei +3 more
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