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Artigos de revistas sobre o tema "High-Current pulse"

Autor: Grafiati

Publicado: 7 de dezembro de 2024

Última modificação: 19 de julho de 2025

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1

Godun, D. V., S. V. Bordusau, and G. P. Budzko. "Output Current Control System of a High Voltage Electric Pulse Generator for Plasma Excitation." PLASMA PHYSICS AND TECHNOLOGY 6, no. 1 (2019): 7–9. http://dx.doi.org/10.14311/ppt.2019.1.7.

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A control and pulse discharge current limiting system integrated into an AC/DC converter and pulse modulator of a high voltage pulse generator have been developed. The peculiarity of such system\textquotesingle s operation is the stabilization of the power supplied to the discharge and the correction of the width of output electric pulses towards decrease upon reaching the specified pulsed current amplitude value. The system enables the pulse generator to work in the modes close to the ``short circuited load'' mode. In this case the driving module of a composite IGBT key performs the correctio

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2

Deke Yan, Deke Yan, Yongsheng Gou Yongsheng Gou, Zhiyuan Song Zhiyuan Song, Chuandong Sun Chuandong Sun, and Shaolan Zhu Shaolan Zhu. "Study on the circuit producing high-speed pulse with high peak current." Chinese Optics Letters 9, s1 (2011): s10307–310310. http://dx.doi.org/10.3788/col201109.s10307.

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3

Fan, Xian Guang, Zhen Bang Hu, Ying Jie Xu, Xiu Fen Wang, Xin Wang, and Yong Zuo. "Pulsed Driver Control System for High-Power LED." Applied Mechanics and Materials 536-537 (April 2014): 1178–82. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.1178.

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Pulsed current source is used to drive high-power LED in thermal analysis and testing. A new scheme to design the high-power LED pulsed current source, which integrates FPGA device, with highly quality single-chip microcomputer C8051F as the control center, is introduced. In order to obtain the LED automatic current control, the negative feedback is used in the LED pulsed driver. The pulsed current source consists of constant-current source and couple output interface controlled by square pulse signal, which ensures the stability of pulsed current, rise time and fall time. It is convenient to

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4

Hu, L., B. Gao, J. K. Lv, S. C. Sun, Y. Hao, and G. F. Tu. "Halo Evolution of Hypereutectic Al-17.5Si Alloy Treated with High-Current Pulsed Electron Beam." Journal of Nanomaterials 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/806151.

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Halo evolution of an Al-17.5Si alloy surface after treatment with increasing pulse numbers of a high-current pulsed electron beam (HCPEB) was investigated. A halo is a ring microstructure resembling a bull’s eye. SEM results indicate that the nanocrystallization of halo induced by HCPEB treatment leads to gradual diffusion of the Si phase. Multiple pulses numbers cause the Si phase to be significantly refined and uniformly distributed. In addition, nanosilicon particles with a grain size of 30~100 nm were formed after HCPEB treatment, as shown by TEM observation. XRD results indicate that Si d

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5

Sun, Yue, Kui Li, Bo Gao, et al. "Study on microstructure and wear resistance of Zr-17Nb alloy irradiated by high current pulsed electron beam." REVIEWS ON ADVANCED MATERIALS SCIENCE 59, no. 1 (2020): 514–22. http://dx.doi.org/10.1515/rams-2020-0047.

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AbstractIn this paper, the microstructure and wear resistance of Zr-17Nb alloy treated by high current pulsed electron beam were studied in detail. A phase change occurs after pulse treatments using X-Ray Diffraction (XRD) analysis, showing β (Nb) phase and α (Zr) phase transformed by a part of β (Zr, Nb) phase. Also, narrowing and shifting of β (Zr, Nb) diffraction peaks were found. Scanning Electron Microscope (SEM) and metallographic analysis results reveal that the microstructure of alloy surface before high current pulsed electron beam (HCPEB) treatment is composed of equiaxed crystals. B

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6

Park, Hyeong-Gyu, Beom-Soo Kang, and Jeong Kim. "Numerical Modeling and Experimental Verification for High-Speed Forming of Al5052 with Single Current Pulse." Metals 9, no. 12 (2019): 1311. http://dx.doi.org/10.3390/met9121311.

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Application of electric current pulses during plastic deformation changes the mechanical behavior owing to the electro-plastic effect. The effect of electric current pulses on the Al5052 alloy is investigated in this study. In order to demonstrate the advantages of passing electric current pulses through a metal sheet during the forming process, a uniaxial tensile test with an electric current pulse was carried out using a self-designed device; this device can apply a 2-kA electric current pulse to the specimen for a short period (>100ms). The electric current increases the temperature of t

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7

Wei, Xianqi, Xiaoli Wang, Xin Li, and Weihua Liu. "Electronic Pulses from Pulsed Field Emission of CNT Cathodes." Journal of Nanomaterials 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/4396430.

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We presented a demonstration of infrared laser irradiated field emission electronic pulse based on carbon nanotube (CNT) cathodes. Electronic pulses greatly depended on pulsed infrared laser and were almost synchronous with laser pulses. We have designed a pulsed field emission cathode based on CNTs and investigated correlation between electronic pulse and laser pulse, acquiring the shortest width of electronic pulses about 50 ms and turn-on field less than 0.14 V/μm. Besides, we have studied the thermal effect on the pulsed field emission of CNT cathodes caused by laser heating. Interestingly

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8

Kuznetsov, V. A., G. D. Polkovnikov, V. E. Gromov, V. A. Kuznetsova, and O. A. Peregudov. "High power current pulse generator based on reversible thyristor converter." Izvestiya. Ferrous Metallurgy 62, no. 12 (2020): 964–71. http://dx.doi.org/10.17073/0368-0797-2019-12-964-971.

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In metal forming using high power current pulses, it becomes necessary to control both reproduction frequency and pulse amplitude. Description of a generator of high power current pulses with controlled thyristor converter is provided as a power source of charging device (charger) for regulating voltage (pulse amplitude) of capacitor charge. Faults of the generators associated with inrush current in capacitor charge modes are revealed, which reduces quality of supply network. To reduce time of transient processes while lowering voltage across capacitors, application of reverse thyristor conver

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9

Kandratsyeu, Aleh, Uladzimir Sabaleuski, Luis Redondo, and Andrei G. Pakhomov. "Four Channel 6.5 kV, 65 A, 100 ns–100 µs Generator with Advanced Control of Pulse and Burst Protocols for Biomedical and Biotechnological Applications." Applied Sciences 11, no. 24 (2021): 11782. http://dx.doi.org/10.3390/app112411782.

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Pulsed electric fields in the sub-microsecond range are being increasingly used in biomedical and biotechnology applications, where the demand for high-voltage and high-frequency pulse generators with enhanced performance and pulse flexibility is pushing the limits of pulse power solid state technology. In the scope of this article, a new pulsed generator, which includes four independent MOSFET based Marx modulators, operating individually or combined, controlled from a computer user interface, is described. The generator is capable of applying different pulse shapes, from unipolar to bipolar

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10

Dutta, P., S. C. Panja, and G. R. K. Sastry. "An Investigation of Machining Time and Surface Roughness in Wire-EDM for Inconel 800." Applied Mechanics and Materials 789-790 (September 2015): 20–24. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.20.

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This paper presents an experimental investigation on the influences of EDM parameters on machining time and surface roughness for machining Inconel 800.Inconel800is widely used in construction of equipment that must have high strength and resist carburization, oxidation and other harmful effects of high temperature exposure. The selected WEDM parameters are pulsed current (210,220 and 230A), pulse-on time (2,3.25, 4.5, 5.75, 7 and 8.25μs) and pulse-off time (19 and 46μs). It has been observed that surface roughness increases with the increase of pulse-on time and pulse current. Similarly machi

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11

Aladov, A. V., A. E. Chernyakov, A. E. Ivanov, and A. L. Zakgeim. "Study of power limitation of AlGaInN LEDs in pulse regime at high current." Journal of Physics: Conference Series 2103, no. 1 (2021): 012186. http://dx.doi.org/10.1088/1742-6596/2103/1/012186.

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Abstract LEDs operating under high pulsed current are of a great interest for different applications, in particular, for VLC (LiFi) systems and laser pumping. Current dependences of the efficiency and emission spectra as well as the rise and fall times of high-power blue LEDs were investigated under extremely high pulse current density up to 7 kA/cm2 and pulse duration from 100 ns to 3 μs. Analysis of the pulse behaviour of the LEDs reveals that the main droop in the efficiency and change in spectra occur up to the current densities ~ 1 kA/cm2 and seems to be non-thermal.

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12

Fathimulla, A., H. Hier, and J. Abrahams. "High-current pulse-doped GaInAs MESFET." Electronics Letters 24, no. 8 (1988): 498. http://dx.doi.org/10.1049/el:19880338.

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13

Ge, Feiyu, Ziteng Xia, Haoming Yuan, et al. "Microstructure and Properties of TiN/TiCN/Al2O3/TiN Coating Enhanced by High-Current Pulsed Electron Beam." Coatings 14, no. 4 (2024): 378. http://dx.doi.org/10.3390/coatings14040378.

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In this work, a TiN/TiCN/Al2O3/TiN coating deposited onto cemented carbide matrix by chemical vapor deposition was irradiated by high-current pulsed electron beam (HCPEB). The influence of pulse times on the phase composition, microstructure, and mechanical properties of the coating investigated. The results showed that no new phase was produced, the grain size of the coating surface was refined, the surface became flat, and the surface roughness decreased after HCPEB treatment. The TiN/TiCN/Al2O3/TiN coating presented a smooth surface with good mechanical performance after HCPEB. A maximum ha

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14

Grishin, A. V., S. L. Glushkov, B. P. Mironychev, et al. "Design of a synchronization system for the “Gamma-4” electrophysical facility." International Journal of Modern Physics: Conference Series 32 (January 2014): 1460333. http://dx.doi.org/10.1142/s2010194514603330.

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At RFNC-VNIIEF on the basis of a “Gamma-1” high-current pulsed accelerator there is being developed a four-module “Gamma-4” electrophysical facility. A synchronization system of the "Gamma-4" facility is meant for a simultaneous (with precision not worse than ±3 ns) triggering of high-volt gas-filled trigatron type switches of modules' pulse forming systems (144 items, operating voltage ≤ 1 MV), modules' pre-pulse switches (24 items, ≤ 3 MV) and 8 Marx generators (40 items, ≤ 100 kV). The synchronization system comprises 54 pulse generators, involving 25 generators on the basis of water insula

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15

Singh, Vivek, V. B. Tiwari, A. Chaudhary, S. Sarkar, and S. R. Mishra. "Pulsed loading of a magneto-optical trap on an atom chip with fast recovery of ultrahigh vacuum." Laser Physics Letters 22, no. 1 (2024): 015501. https://doi.org/10.1088/1612-202x/ad9d1f.

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Abstract Here, we present studies on pulsed loading of a rubidium (Rb) magneto-optical trap (MOT) in an ultra-high vacuum (UHV) environment on an atom chip. We have used a parallel combination of Rb dispensers for better heat dissipation to achieve fast UHV recovery in the chamber after the end of the current pulse to the dispensers. We have estimated the threshold heat energy required for activation of the dispensers for different values of current pulses. Although a pulse with a higher current value and shorter duration has a lower threshold heat energy, we operated the dispensers at moderat

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16

Levinshtein, Michael E., Tigran T. Mnatsakanov, Pavel A. Ivanov, John W. Palmour, Mrinal K. Das, and Brett A. Hull. "Self-Heating of 4H-SiC PiN Diodes at High Current Densities." Materials Science Forum 600-603 (September 2008): 1007–10. http://dx.doi.org/10.4028/www.scientific.net/msf.600-603.1007.

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Self-heating in high-voltage 4H-SiC PiN diodes has been studied experimentally and theoretically in dc and 8-ms single pulse modes. To simulate the self-heating, an electro-thermal model was used to calculate non-isothermal current-voltage characteristics at dc and current-time dependences at pulsed measurements. The dynamic instability of N-type was observed: the current decreases in spite of increasing of bias applied to the structure. At dc, irreversible diode degradation was found to occur at a current density of about 1700 A/cm2. Under a single current surge 8-ms pulse, the loss of therma

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17

Remnev, G. E., Mikhail V. Zhuravlev, M. V. Belyakov, et al. "HIGH-POWER DOUBLE-PULSE GENERATOR FOR POWER SUPPLY TO PULSED HIGH-CURRENT ACCELERATOR." High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes 21, no. 4 (2017): 309–15. http://dx.doi.org/10.1615/hightempmatproc.2018025165.

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18

Nowak, Mikołaj, Kazimierz Jakubiuk, Daniel Kowalak, Marek Pikoń, Józef Czucha, and Jacek Starzyński. "Current divider-based nanosecond high current pulse measuring systems." Measurement 181 (August 2021): 109600. http://dx.doi.org/10.1016/j.measurement.2021.109600.

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19

Zhang, Xi, K. N. Tu, Zhong Chen, et al. "Pulse Electroplating of Copper Film: A Study of Process and Microstructure." Journal of Nanoscience and Nanotechnology 8, no. 5 (2008): 2568–74. http://dx.doi.org/10.1166/jnn.2008.18288.

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Copper films with high density of twin boundaries are known for high mechanical strength with little tradeoff in electrical conductivity. To achieve such a high density, twin lamellae and spacing will be on the nanoscale. In the current study, 10 μm copper films were prepared by pulse electrodeposition with different applied pulse peak current densities and pulse on-times. It was found that the deposits microstructure was dependent on the parameters of pulse plating. Higher energy pulses caused stronger self-annealing effect on grain recrystallization and growth, thus leading to enhanced fiber

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20

Hu, Ye Lin, Zhi Wen Du, and Zhao Quan Chen. "Development of a Pulsed DC Power Supply for Generating Cold Plasma Jet." Advanced Materials Research 791-793 (September 2013): 1841–44. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1841.

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This paper discusses a lithium battery-driven cold plasma jet at atmospheric pressure with a pulsed power supply of design and its simulation. H.V. DC(High voltage directed current) and pulsed discharge circuit comprise of the entire pulse power system. H.V. DC circuit using TIs TMS320F28335 chips as the core of the circuit control module, the chip improves the stability of the H.V.DC circuits. Pulsed discharge circuit design plays a crucial impact on the formation of the narrowed pulses. A new double pulsed discharge circuit is designed by the proposed program. As discharge experiment shown f

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21

Flaxer, E. "High-voltage pulse modulated radio frequency generator for dielectric barrier discharge combined with ultra-fast high power pulse generator." Journal of Instrumentation 16, no. 10 (2021): P10003. http://dx.doi.org/10.1088/1748-0221/16/10/p10003.

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Abstract Dielectric barrier discharge is the electrical discharge between two electrodes separated by an insulating dielectric barrier. The discharge process typically uses a high-voltage alternating current in the range of several kilohertz to several gigahertz. A high-frequency and high-power pulse generator is required to drive the discharge process through the capacitance load. There are two main techniques to implement this type of generator: the forced and resonant modes. This work demonstrates the implementation of a programmable digital circuit based on a digital signal controller and

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22

Kiziridi P. P. and Ozur G.E. "Pulse energy of a non-relativistic, high-current electron beam." Technical Physics 92, no. 6 (2022): 740. http://dx.doi.org/10.21883/tp.2022.06.54421.316-21.

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Energetic characteristics of a high-current electron gun with a cathode assembly based on multi-gap initiation of explosive emission by dielectric surface flashover in the mode of vacuum and gas-filled diode were investigated. It has been shown that it is better to measure high-current electron beam pulse energy using a calorimetric (thermal imaging) method than to calculate it from the waveforms of accelerating voltage and beam current onto collector (target) since the beam current values may be essentially overstated because of decay current of a dense plasma emergent under the bombardment o

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23

Tang, Xiongmin, Tianhong Jiang, and Wenrui Fang. "A unipolar compact nanosecond pulsed power supply with high power factor for dielectric barrier discharge applications." Review of Scientific Instruments 93, no. 8 (2022): 084707. http://dx.doi.org/10.1063/5.0089020.

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A high voltage with a very short duration and fast rising time is beneficial to generate uniform and diffuse plasma in dielectric barrier discharge (DBD) loads, and a power supply with a high power factor (PF) can reduce the impact on the power grid. According to two requirements, a unipolar high voltage pulsed power supply with power factor correction (PFC) is proposed in this paper. The power supply consists of a unipolar pulse high voltage generating unit, a PFC unit, and a driving circuit. By introducing a feedback clamping diode and a reverse current blocking diode in a flyback converter,

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24

Gaikwad, Nikhil B., Lichao Liu, Matthew P. Griffiths, Denys Grombacher, and Jakob Juul Larsen. "A high-duty-cycle transmitter unit for steady-state surface NMR instruments." Geoscientific Instrumentation, Methods and Data Systems 14, no. 2 (2025): 139–51. https://doi.org/10.5194/gi-14-139-2025.

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Abstract. Groundwater measurements using surface nuclear magnetic resonance (NMR) have been notoriously challenged by a poor signal-to-noise ratio (SNR), but a new steady-state methodology based on long, high-duty-cycle, phase-locked pulse trains has demonstrated huge SNR increases. The hardware requirements for transmitters for steady-state surface NMR are significantly increased compared to transmitters for standard surface NMR use, due to the need for very high pulse-to-pulse stability over long survey times and the increased thermal load caused by a much higher duty cycle. Furthermore, the

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25

Hao, Sheng Zhi, Yang Xu, Min Cai Li, and Chuang Dong. "Surface Treatment of 316L Stainless Steel by High Current Pulsed Electron Beam." Materials Science Forum 654-656 (June 2010): 1803–6. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.1803.

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High current pulsed electron beam has been developing as a useful tool for surface modification of materials. This paper presents our research on the surface treatment of 316L stainless steel with an equipment of working parameters as electron energy 20-30keV, pulse duration 1.5µs and energy density ~6J/cm2. The surface microstructure was characterized with metallography, X-ray diffractometry and electron backscatter diffraction (EBSD) techniques. It was found that the modified samples showed significant improvement on corrosion resistance when using increased pulse number and higher energy de

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26

Li, Zerui. "Analysis of the Principles and Applications of Ultra-intensity and Ultrashort Laser." Highlights in Science, Engineering and Technology 76 (December 31, 2023): 441–49. http://dx.doi.org/10.54097/9s9fm882.

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With the development of laser technology, how to improve the output performance and peak power of lasers has become one of the hot directions of current research. This study analyzes the principles and applications of ultra-intensity and ultrashort pulse laser. It firstly outlines the development history of laser technology and the basic definition of ultra-intensity and ultrashort pulse laser. It also mentions the realization methods for generating ultra-intensity and ultrashort pulse lasers, such as mode-locked femtosecond oscillators and CPA-based femtosecond amplifiers. The paper describes

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27

Korolkov, O. E., M. A. Pakhomov, and V. V. Stolyarov. "The electroplastic effect in titanium alloys under tension." Industrial laboratory. Diagnostics of materials 88, no. 10 (2022): 73–82. http://dx.doi.org/10.26896/1028-6861-2022-88-10-73-82.

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The electroplastic effect (EPE) is a phenomenon which consists in a decrease in the strain resistance and enhancing of the plasticity of metals under the effect of the electric current of a sufficiently high density [1]. The goal of the study is to compare the deformation behavior of single-phase commercially pure titanium Grade 4 and two-phase VT6 alloy under tension and external heating with introduction of a pulsed current. Current of various pulse ratio and density was supplied to the grips of the tensile testing machine from a pulse generator. To estimate the relative contribution of the

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Hao, Sheng Zhi, B. Gao, Ai Min Wu, et al. "Surface Treatment of Materials with High Current Pulsed Electron Beam." Materials Science Forum 475-479 (January 2005): 3959–62. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.3959.

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High current pulsed electron beam (HCPEB) is now becoming a promising energetic source for the surface treatment of materials. When the concentrated electron flux transferring its energy into a very thin surface layer within a short pulse time, superfast processes such as heating, melting, evaporation and consequent solidification, as well as dynamic stress field induced by an abrupt thermal distribution in the interactive zone impart surface layer with improved physicochemical and mechanical properties. The present paper reports mainly our experimental research work on this new-style techniqu

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29

Slipchenko, Sergey, Aleksander Podoskin, Ilia Shushkanov, et al. "High-Peak-Power Sub-Nanosecond Laser Pulse Sources Based on Hetero-Integrated “Heterothyristor–Laser Diode” Vertical Stack." Photonics 12, no. 2 (2025): 130. https://doi.org/10.3390/photonics12020130.

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Compact high-power sub-nanosecond laser pulse sources with a wavelength of 940 nm are developed and studied. A design for laser pulse sources based on a vertical stack is proposed, which includes a semiconductor laser chip and a current switch chip. To create a compact high-speed current switch, a three-electrode heterothyristor is developed. It is found that the use of heterothyristor-based current switches allows the creation of a low-loss pump current circuit, generating short current pulses and operating the semiconductor laser in gain-switching mode. For the semiconductor laser chip, an a

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30

Shim, Chi Hyun, Ki Moon Nam, Yong Woon Parc, and Dong Eon Kim. "Isolated terawatt sub-attosecond high-energy x-ray pulse generated by an x-ray free-electron laser." APL Photonics 7, no. 5 (2022): 056105. http://dx.doi.org/10.1063/5.0067074.

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The endless quest for dynamics in natural phenomena has resulted in the generation and application of attosecond pulses to trace electron dynamics in atomic and molecular systems. The next challenge is to generate powerful pulses on the zeptosecond time scale, which is currently inaccessible. Through a simulation study, a new type of x-ray source that can generate an isolated terawatt sub-attosecond pulse at high-energy x rays by combining attosecond pulse technology with free-electron laser technology is proposed. The successful generation of a sub-attosecond pulse necessitates the considerat

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31

Cernák, M., and T. Hosokawa. "Negative Corona Current Pulses and Cathode Sheath Instabilities in a Short Point-Plane Gap in CO2." Australian Journal of Physics 45, no. 2 (1992): 193. http://dx.doi.org/10.1071/ph920193.

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Waveforms ofthe first negative corona current pulses have been measured in C02 and C02+SF6 mixtures as a function of applied voltage and gas pressure in the range 6�67-66�7 kPa. A complex form of the pulses with a step on the pulse leading edge and a current hump on the pulse trailing part has been found at gas pressures below 40 kPa. Changing the cathode surface material from copper to copper iodide, which has an exceptionally high photoelectric yield, resulted in at least a twofold increase in height of the step on the pulse leading edge, but had little effect on the main current rise to the

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32

Song, Falun, Fei Li, Beizhen Zhang, et al. "Recent advances in compact repetitive high-power Marx generators." Laser and Particle Beams 37, no. 01 (2019): 110–21. http://dx.doi.org/10.1017/s0263034619000272.

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AbstractThis paper introduces recent activities on Marx-based compact repetitive pulsed power generators at the Institute of Applied Electronics (IAE), China Academy of Engineering Physics (CAEP), over the period 2010–2018. A characteristic feature of the generators described is the use of a simplified bipolar charged Marx circuit, in which the normal isolation resistors or inductors to ground are removed to make the circuit simpler. Several pulse-forming modules developed to generate a 100 ns square wave output are introduced, including thin-film dielectric lines of different structures, a pu

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33

Baranov, M. I., S. G. Buriakovskyi, and V. V. Kniaziev. "Destruction of polymer insulation and threshold amplitudes of current pulses of different temporal shapes for electric wires and cables in the low- and high-current circuits of pulse power engineering, electrical engineering and electronic devices." Electrical Engineering & Electromechanics, no. 6 (December 3, 2021): 31–38. http://dx.doi.org/10.20998/2074-272x.2021.6.05.

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Goal. Development of engineering method for settlement of threshold amplitudes Impk of single-pulse current ip(t) of different temporal shapes for electric wires and cables with polyethylene (PET), polyvinylchloride (PVC) and rubber (R) half-length insulation, used in modern pulsed power engineering, electrical engineering and electronics in their low- and high-current circuits. Methodology. Basis of the theoretical and applied electrical engineering, electrical power engineering, electrophysics bases of technique of high-voltage and large pulsed currents, bases of low- and high-current electr

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34

Dmitriev, V. M., O. R. Prikhod’ko, and E. V. Khristenko. "Pulse-mode measurements of critical current density in bulk high-temperature superconductors." Soviet Journal of Low Temperature Physics 15, no. 10 (1989): 605–6. https://doi.org/10.1063/10.0032273.

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The proposed method of measurement of critical currents in HTS samples with a large cross-sectional area in a wide temperature range consists in the passage of a pulsed electric current through the sample. Temperature dependences of critical currents in HTS ceramic samples are determined. It is shown that experimental conditions can be regarded as isothermal for the electric pulse duration τ ≤ 10 ms.

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Bedrin, Alexander G., Alexander N. Zhylin, and Igor L. Lovchy. "Using a fiber optic sensor for registration of pulsed plasma discharge current." Izmeritel`naya Tekhnika, no. 9 (2021): 28–34. http://dx.doi.org/10.32446/0368-1025it.2021-9-28-34.

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The problem of increasing the accuracy of recording the pulse shape of a rapidly changing current of a powerful plasma emitter under conditions of powerful electromagnetic interference is considered. To register high-current pulsed discharges, it is proposed to use a polarimetric fiber-optic current sensor based on a Spun-type fiber. Using the indicated current sensor, a technique for recording high-current pulsed discharges of a plasma emitter in the mode of time profiling of the current pulse of two high-voltage capacitive storage devices with a total energy of up to 1800 kJ is realized. The

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Qin, Feng, Wei Chen, Xutong Wang, Tao Huang, Zhitong Cui, and Xin Nie. "Transient Response Characteristics of Metal Oxide Arrester under High-Altitude Electromagnetic Pulse." Energies 15, no. 9 (2022): 3303. http://dx.doi.org/10.3390/en15093303.

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In order to study the strong electromagnetic pulse effect of critically vulnerable equipment in power systems and evaluate the survivability under high-altitude electromagnetic pulses, it is necessary to study the characteristics of the transient response of metal oxide arresters to the high-altitude electromagnetic pulse by experiment. In this paper, an experimental platform for high-altitude electromagnetic pulse conduction current injection for a typical 10 kV metal oxide arrester was set up, and the key parameters such as peak value of overshoot voltage, peak value of residual voltage, act

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Pirc, Eva, Damijan Miklavčič, Katja Uršič, Gregor Serša, and Matej Reberšek. "High-Frequency and High-Voltage Asymmetric Bipolar Pulse Generator for Electroporation Based Technologies and Therapies." Electronics 10, no. 10 (2021): 1203. http://dx.doi.org/10.3390/electronics10101203.

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Currently, in high-frequency electroporation, much progress has been made but limited to research groups with custom-made laboratory prototype electroporators. According to the review of electroporators and economic evaluations, there is still an area of pulse parameters that needs to be investigated. The development of an asymmetric bipolar pulse generator with a maximum voltage of 4 kV and minimum duration time of a few hundred nanoseconds, would enable in vivo evaluation of biological effects of high-frequency electroporation pulses. Herein, from a series of most commonly used drivers and o

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Eshpulatov, Nodir, Tolib Khalmuradov, Rakhmаnberdi Khalilov, Abdulkhay Obidov, Sobir Nurmanov, and Dilmurat Omonov. "Theoretical substantiation of the influence of electric pulse processing on the process of obtaining juice from grapes and fruits." E3S Web of Conferences 264 (2021): 04086. http://dx.doi.org/10.1051/e3sconf/202126404086.

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The article presents the theoretical basis of the effect of electrical pulse processing on the process of obtaining juice from grapes and fruits. High-voltage pulsed electrical processing technology for biological products has a higher damaging effect on living cells than other electrical effects, and this can be achieved due to the passage of large discharges of current through tissues and cells in a short period of time. It has been found that high efficiency in killing living cells by secretion can be achieved as a result of a pulsed energy effect. In order to develop energy-efficient elect

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Tantavichet, Nisit, and Mark D. Pritzker. "Low- and High-Frequency Pulse Current and Pulse Reverse Plating of Copper." Journal of The Electrochemical Society 150, no. 10 (2003): C665. http://dx.doi.org/10.1149/1.1602457.

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Obukhov, V. A., A. V. Ovchnnikov, A. F. Piskunkov, and N. P. Shishaev. "High-Speed Macroparticle Destruction in a High-Current Pulse Discharge." IEEE Transactions on Magnetics 45, no. 1 (2009): 626–30. http://dx.doi.org/10.1109/tmag.2008.2008615.

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Rai, Krishna Kumar, A. V. Giridhar, D. R. Jahagirdhar, Ashish Rai, and Akash Kumar Paul. "Investigation on the Effect of Cable Length on Pulse Shape of High Voltage High Pulse Power Supply." Defence Science Journal 72, no. 2 (2022): 243–49. http://dx.doi.org/10.14429/dsj.72.17548.

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In the present scenario of pulse power applications, transmission of high voltage pulses varies as per load condition. In the early days of its application, High Voltage High Pulse Power Supply (HVHPPS) design saw short distance between load and source, where the effect of cable length was not taken into account for design. This paper presents the effect of cable length on pulse shape of High Voltage High Pulse Power Supply. The load under observation is Klystron based high energy particle accelerator system. The performance of pulse power systems were observed continuously on a daily basis th

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42

Powers, R. K., and M. D. Binder. "Experimental evaluation of input-output models of motoneuron discharge." Journal of Neurophysiology 75, no. 1 (1996): 367–79. http://dx.doi.org/10.1152/jn.1996.75.1.367.

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1. We measured the modulation of the background firing rate of cat spinal motoneurons produced by simulated, repetitive excitatory postsynaptic potentials (EPSPs) to test the accuracy of several proposed motoneuron input-output functions. Rhythmic discharge was elicited in the motoneurons by injecting suprathreshold current steps 1-1.5 s in duration. On alternate trials, trains of short (0.5-5 ms) current pulses were superimposed on the current steps to stimulate the effects of trains of individual EPSPs. The increase in firing rate (delta F) due to the addition of the pulses was calculated as

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Rogov, Aleksey B. "Smart Arbitrary Waveform Generator with Digital Feedback Control for High-Voltage Electrochemistry." Instruments 3, no. 1 (2019): 13. http://dx.doi.org/10.3390/instruments3010013.

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This paper describes a design approach to a control system of power supply for high-voltage electrochemical processes such as plasma electrolytic oxidation (PEO) or high-voltage anodising (HVA), which require alternating polarisation pulses up to 750 V and a typical current density of 50–500 mA/cm2. Complex characteristics of the electrochemical system response on applied polarisations (positive or negative) cause necessity of precise control of polarising pulse shapes for better process operation and its understanding. A device performs cycle-by-cycle pulse-width modulation (PWM) control, inc

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Lü, Ze-Qi, Yan-Zhao Xie, Ming-Yue Gou, et al. "Development of 200 kV multi-function pulsed radiation system." Acta Physica Sinica 70, no. 20 (2021): 205206. http://dx.doi.org/10.7498/aps.70.20210583.

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<sec>A multi-functional pulsed radiation system with a peak voltage of 200 kV, an impedance of 2 Ω, and a full width at half maximum (FWHM) of 30 ns is developed. The system can be switched flexibly in two states of generating pulsed electron beam and pulsed X-ray by changing the cathode and anode. It consists of a pulse power driving source, a vacuum diode, and an experimental cavity. A Marx generator, a high energy storage water transmission line, and two pulse compression switches are utilized to generate a high voltage on diode. An effector can be placed in the experimental cavity wh

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Lü, Ze-Qi, Yan-Zhao Xie, Ming-Yue Gou, et al. "Development of 200 kV multi-function pulsed radiation system." Acta Physica Sinica 70, no. 20 (2021): 205206. http://dx.doi.org/10.7498/aps.70.20210583.

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<sec>A multi-functional pulsed radiation system with a peak voltage of 200 kV, an impedance of 2 Ω, and a full width at half maximum (FWHM) of 30 ns is developed. The system can be switched flexibly in two states of generating pulsed electron beam and pulsed X-ray by changing the cathode and anode. It consists of a pulse power driving source, a vacuum diode, and an experimental cavity. A Marx generator, a high energy storage water transmission line, and two pulse compression switches are utilized to generate a high voltage on diode. An effector can be placed in the experimental cavity wh

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Bujnowicz, Łukasz, and Marcin Sarewicz. "Multichannel pulse high-current driver of magnetic actuator." HardwareX 11 (April 2022): e00286. http://dx.doi.org/10.1016/j.ohx.2022.e00286.

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LI, Xiaohai. "ELECTROLYTIC MICROMACHINING WITH HIGH FREQUENCY SHORT PULSE CURRENT." Chinese Journal of Mechanical Engineering 42, no. 01 (2006): 162. http://dx.doi.org/10.3901/jme.2006.01.162.

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Zhang, Qian, Zhiheng Liu, Deling Lin, Yuzhe Hu, Borui Zheng, and Taifei Zhao. "Analysis of discharge characteristics of pulsed plasma power source in the microsecond scale." Journal of Physics: Conference Series 2313, no. 1 (2022): 012023. http://dx.doi.org/10.1088/1742-6596/2313/1/012023.

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Abstract The characteristics test of plasma discharge is an essential physical basis for studying plasma flow control. The power consumption of pulsed plasma aerodynamic actuation is 30% lower than when the actuation voltage is a continuous sine wave. This paper uses a self-developed pulsed plasma power source to superimpose DC. The power source conducts the discharge measurement on the sliding discharge plasma. The experimental results show that the power source effectively outputs 0-20 kV pulsed high voltage. The superimposed DC power source generates a negative DC high voltage, accelerating

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Bozorov, Elmurod, and Husniddin Abdullayev. "Study on the effect of electric pulse treatment for disinfestation of vegetables." E3S Web of Conferences 434 (2023): 01024. http://dx.doi.org/10.1051/e3sconf/202343401024.

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This paper describes a method of using pulsed discharge to control nematode diseases on tomato and cucumber rhizomes and crops grown in dacha plots. When pulsed discharges are applied to living tissue, certain chemical, physical, and biological processes occur, depending on the pulse energy, pulse discharge current, pulse discharge voltage, pulse discharge exposure time, pulse discharge impact current, and other similar factors. Electric pulses were applied to grafts of nematode-infested vegetables, tomatoes and cucumbers, to measure grafting ability. Crop yields were estimated by the total am

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Wang, Min, Jie Chen, Niu Liu, and Ya Wang. "Inter-Pulse Spectroscopy Based on Room-Temperature Pulsed Quantum-Cascade Laser for N₂O Detection." Applied Mechanics and Materials 128-129 (October 2011): 607–10. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.607.

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Mid-infrared lasers are very suitable for high-sensitive trace-gases detection for their wavelengths cover the fundamental absorption lines of most gases. Quantum-cascade (QC) lasers have been demonstrated to be ideal light sources with its special power, tuning and capability of operating in room-temperature. All these merits make it appropriate for the high resolution spectrum analysis. The absorption spectrum monitoring technology based on the QC laser pulsed operating in the room temperature, combining with the strong absorption of the gas molecule in the basic frequency, has become an eff

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