Journal articles: 'Multichannel power supply'

1

Bulakh, E. V., V. A. Volkov, and K. P. Sirenko. "A multichannel power supply for high power magnetrons." Instruments and Experimental Techniques 54, no. 3 (May 2011): 384–89. http://dx.doi.org/10.1134/s0020441211030122.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Lee, Paul Jung-Ho, Amine Bermak, Man-Kay Law, and Jun Ohta. "A Multichannel Power-Supply-Modulated Microstimulator With Energy Recycling." IEEE Design & Test 33, no. 4 (August 2016): 61–73. http://dx.doi.org/10.1109/mdat.2016.2533359.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Ruiz, J., J. Ortuondo, N. Palacios, J. Izquierdo, L. A. Leturiondo, E. Aramendi, and J. Amantegui. "Real time power supply quality measurement and monitoring multichannel system." IEEE Transactions on Power Delivery 10, no. 3 (July 1995): 1190–99. http://dx.doi.org/10.1109/61.400896.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Zheng, Borui, Yaqing Liu, Chao Gao, and Yibin Li. "Design and Application of Multichannel Peristaltic Acceleration Pulsed Plasma Power Supply." IEEE Transactions on Plasma Science 42, no. 7 (July 2014): 1902–8. http://dx.doi.org/10.1109/tps.2014.2328622.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Ma, Junhai, Yi Tian, and Liu Chengjin. "Studying the Complexity of Multichannel Supply Chain with Different Power Structures Under Carbon Subsidy Policy." International Journal of Bifurcation and Chaos 31, no. 11 (September 2, 2021): 2150166. http://dx.doi.org/10.1142/s0218127421501662.

Full text

Abstract:

The game characteristics and equilibrium strategies of a triple-channel supply chain under the carbon subsidy policy are studied in this work with three different game power structures. There are simultaneous decision-making, manufacturer-dominated market and retailer-dominated market. The decision mechanism for order quantity of manufacturer and dual-channel retailer, is discussed. Meanwhile, their complex dynamic characteristics are studied. It is found that when the government implements dual low-carbon subsidies, the supply chain system in which the manufacturer dominates the market is more stable. The government should pay attention to the power structure of the market to determine an appropriate subsidy rate. The over-adjustment of order quantity from manufacturer’s direct sales channel and retailer’s online channel both will lead to large periodical fluctuations in the system, and even bifurcation and chaos. These will cause substantial fluctuations and even loss in the profits of supply chain companies. This analysis shows that delayed feedback can effectively stabilize the periodic bifurcation and chaos in the system.

APA, Harvard, Vancouver, ISO, and other styles

6

Querol, M., J. Rodríguez, J. Toledo, R. Esteve, V. Álvarez, and V. Herrero. "A programmable, multichannel power supply for SIPMs with temperature compensation loop and Ethernet interface." Journal of Instrumentation 11, no. 12 (December 15, 2016): C12035. http://dx.doi.org/10.1088/1748-0221/11/12/c12035.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Huang, Shengfang, Zhibo Zhang, Huimin Song, Yun Wu, and Yinghong Li. "A Novel Way to Enhance the Spark Plasma-Assisted Ignition for an Aero-Engine Under Low Pressure." Applied Sciences 8, no. 9 (September 1, 2018): 1533. http://dx.doi.org/10.3390/app8091533.

Full text

Abstract:

Finding a new ignition strategy for ignition enhancement in a lean-burn combustor has always been the biggest challenge for high-altitude, long-endurance unmanned aerial vehicles (UAVs). It is of great importance for the development of high-altitude, long-endurance aircraft to improve the secondary ignition ability of the aero-engine at high altitude where the ignition capability of the aero-engine igniter rapidly declines. An innovative ignition mode is therefore urgently needed. A novel plasma-assisted ignition method based on a multichannel discharge jet-enhanced spark (MDJS) was proposed in this study. Compared to the conventional spark igniter (SI), the arc discharge energy of the MDJS was increased by 13.6% at 0.12 bar and by 14.7% at 0.26 bar. Furthermore, the spark plasma penetration depth of the MDJS was increased by 49% and 103% at 0.12 bar and 0.26 bar, respectively. The CH* radicals showed that the MDJS obtained a larger initial spark kernel and reached a higher spark plasma penetration depth, which helped accelerate the burning velocity. Ignition tests in a model swirl combustor showed that the lean ignition limit was extended 24% from 0.034 to 0.026 at 25 m/s with 20 °C kerosene and 17% from 0.075 to 0.062 at 12 m/s with −30 °C kerosene maximally. The MDJS was a unique plasma-assisted ignition method, activated by the custom ignition power supply instead of a special power supply with an extra gas source. The objective of this study was to provide a novel multichannel discharge jet-enhanced spark ignition strategy which would help to increase the arc discharge energy, the spark plasma penetration depth and the activated area without changing the power supply system and to improve the safety and performance of aero-engines.

APA, Harvard, Vancouver, ISO, and other styles

8

van Dongen, Marijn N., and Wouter A. Serdijn. "A Power-Efficient Multichannel Neural Stimulator Using High-Frequency Pulsed Excitation From an Unfiltered Dynamic Supply." IEEE Transactions on Biomedical Circuits and Systems 10, no. 1 (February 2016): 61–71. http://dx.doi.org/10.1109/tbcas.2014.2363736.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

AKHILESH, TRIPATHI, SINGH AMRITA, RATHI SACHIN, UPADHYAY RINKI, M. K. BADAPANDA, and LAD MAHENDRA. "FPGA BASED CONTROL AND PROTECTION UNIT OF A MULTICHANNEL PULSED POWER SUPPLY FOR SOLID STATE RF AMPLIFIERS." i-manager’s Journal on Electrical Engineering 13, no. 4 (2020): 49. http://dx.doi.org/10.26634/jee.13.4.17638.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Maslov, Oleh V., and Volodymyr V. Osadchyy. "SOFTWARE AT MOBILE SPECTROMETER WITH CZT-DETECTOR." Applied Aspects of Information Technology 4, no. 1 (April 10, 2021): 100–110. http://dx.doi.org/10.15276/aait.01.2021.9.

Full text

Abstract:

The technology is based on a semiconductor CdZnTe-portable (almost the size of a mobile phone) gamma-ray spectrometer with high resolution, which provides high efficiency of rapid identification of radionuclides and assessment of radiation dose from low to moderately high levels. The CdZnTe gamma-ray spectrometer is a highly efficient device based on the use of CdZnTe (CZT) semiconductor detectors operating at room temperature with very low power consumption, a digital multichannel analyzer, and a microcomputer. CdZnTe-portable spectrometer is a self-contained device and consists of three modules - a detector module, a multichannel analyzer, and a microcomputer. The detector module contains a high-quality CdZnTe detector, a preamplifier, and a high voltage power supply for the detector. There are detector modules with different volumes of the CZT detector from 5 mm3 to 1600 mm3. It is possible to use a multi-detector system. The analyzer module contains an amplifier, a digital signal processor, a low voltage power supply, and a computer interface. The microcomputer software interacts with the multichannel analyzer, analyzes gamma spectra, and provides the accumulation of time profiles of the dose of gamma radiation, communication with other information systems. Spectrometric measurements in real-time make it possible to use "electronic collimation" technologies to build a map of the radiation field and localize sources of ionizing radiation, with the subsequent certification of identified sources, creation of an effective radiation monitoring system with the functions of certification of ionizing sources radiation. The corresponding software allows you to solve the following tasks – building a three-dimensional map of the fields of ionizing radiation of various degrees of spatial detailing, taking into account the radiation energy, localization, and certification of gamma radiation sources. The special laboratory kit is based on μSPEC microspectrometers. A LattePanda single board computer is used to control the operation of spectrometers, collect and analyze data. LattePanda – A Windows 10 Computer with integrated Arduino. This explains the choice of LattePanda. Windows 10 application allows you to use the WinSPEC software to control the multichannel analyzer operation supplied with the spectrometer. The built-in Arduino allows you to remote control the movement of the radiation source during laboratory experiment. Both the traditional problems of calibrating spectrometers (energy calibration and efficiency curves), including those for various source geometries, processing the measured spectra using standard programs, calculating the activity of sources, and the problem of creating a spectra processing program and a spectrometer control program are considered. The values of the minimum detectable activity are given.

APA, Harvard, Vancouver, ISO, and other styles

11

Wu, Fang. "Research on Dynamic and Complexity of Energy-Saving Investment about Multichannel and Multienergy Supply Chain." Complexity 2020 (July 15, 2020): 1–10. http://dx.doi.org/10.1155/2020/2409636.

Full text

Abstract:

Considering the multienergy structure of the electricity market and supply-side competition reform in China, a dual-channel and multiproduct supply chain model is constructed. There are three players in the game model: new energy company and traditional energy company provide energy for the market and the State Grid at the same time. The State Grid is a retailer who buys electricity from two companies and supplies to the market after converting and transmitting the power. Three companies can invest in grid management for saving energy and reducing losses. The energy loss rate is an exponential function of line loss investment. Through the bifurcation graph, Lyapunov exponent, and the basin of parameter, the complex characteristics of the investment market are analyzed. It is interesting to find the Grazing–Hopf bifurcation which usually occurs in nonlinear circuits. The mixed expectation of bounded rationality and the naive expectation is conducive to suppressing the bifurcation and chaos of the market. When external shocks occur, the control model has good robustness.

APA, Harvard, Vancouver, ISO, and other styles

12

Cheng, Yonghong, and Zhongkai Xiong. "Strategic Conditions for Opening an Internet Store and Pricing Policies in a Retailer-Dominant Supply Chain." Mathematical Problems in Engineering 2015 (2015): 1–15. http://dx.doi.org/10.1155/2015/640719.

Full text

Abstract:

To examine when the manufacturer and dominant retailer open their own Internet stores and how setting prices to ensure opening Internet stores are profitable. We consider a two-echelon supply chain with one manufacturer and one dominant retailer. The retailer has a physical store in a monopolist market. Depending on whether the Internet stores are opened successfully by them, we firstly obtain equilibrium prices and profits under four possible supply chain structures. Secondly, we identify several strategic conditions when it is optimal to open an Internet store for the manufacturer and dominant retailer and discuss its implications. It is interesting to note that multichannel retailing is not necessarily the best strategy for the dominant retailer. In addition, we investigate the impacts of problem parameters (the dominant retailer’s bargaining power and consumers’ disutility of purchasing a product from Internet store) on the manufacturer and dominant retailer’s pricing policies. We find that the manufacturer’s optimal price at her Internet store is not always being lower than the dominant retailer’s. Finally, we conduct numerical examples to illustrate the theoretical results.

APA, Harvard, Vancouver, ISO, and other styles

13

Balato, Marco, Annalisa Liccardo, Carlo Petrarca, and Francesco Bonavolontà. "Buck-based DMPPT emulator: a helpful experimental demonstration unit." ACTA IMEKO 10, no. 2 (June 29, 2021): 14. http://dx.doi.org/10.21014/acta_imeko.v10i2.923.

Full text

Abstract:

<span lang="EN-GB">Distributed control strategyrepresents the most promising solution to enhance the lackluster energetic performance of mismatched PhotoVoltaic (PV) systems. Moreover, many factors that contribute to such poor performance are still to be explored. To fully understand the advantages offered by the Distributed Maximum Power Point Tracking (DMPPT) approach, the implementation of a DMPPT emulator is necessary. Based on the above needs, this paper describes the realization and use of a Buck based DMPPT emulator and shows its high flexibility and potential. The realized device is capable to emulate the output current vs. voltage (I-V) characteristics of many commercial PV modules with a dedicated Buck DC/DC converter not only in controlled atmospheric conditions but also with different currents rating of the switching devices. The system implementation is based on a commercial power supply controlled by a low-cost Arduino board. Data acquisition is performed through a low-cost current and voltage sensor by using a multichannel board by National Instruments. Experimental results confirm the validity and potential of the proposed DMPPT emulator.</span>

APA, Harvard, Vancouver, ISO, and other styles

14

Chen, Yuan Long, H. B. Zhan, Shuo Jen Lee, and S. M. Zhu. "Micro-ECM of Maze Flow Channel on Bipolar Plates of Fuel Cell." Key Engineering Materials 458 (December 2010): 125–30. http://dx.doi.org/10.4028/www.scientific.net/kem.458.125.

Full text

Abstract:

A lot of flow channels should be processed on stainless steel bipolar plates of fuel cell. In order to increase contact area of gas with electrode and ensure the gas flowing smoothly, the flow channels will be multichannel maze. It is difficult to be machined by conventional methods, because the width and depth of the flow channels are very small (about 300μm). When using micro electrochemical machining, flow channels with low surface roughness and good machining accuracy could be produced efficiently. The machining cathode tool, fixture, μ-second grade pulse power supply and machining parameters are introduced. Using microsecond pulse current processing, the maze-shaped flow channel on bipolar plates of fuel cell can be processed seccessfully, with high efficiency and good quality. Thus graphite bipolar plates may be replaced by metal bipolar plates. It may promote the technology advancing for fuel cell, and reducing its cost. Key factors for influencing electrochemical machining process of flow Channels on bipolar plates include the design of cathode and fixture , microsecond pulse current, and suited technical parameters

APA, Harvard, Vancouver, ISO, and other styles

15

Balato, Marco, Annalisa Liccardo, and Carlo Petrarca. "Dynamic Boost Based DMPPT Emulator." Energies 13, no. 11 (June 6, 2020): 2921. http://dx.doi.org/10.3390/en13112921.

Full text

Abstract:

The Distributed Maximum Power Point Tracking (DMPPT) approach is a promising solution to improve the energetic performance of mismatched PhotoVoltaic (PV) systems. However, there are still several factors that can reduce DMPPT energy efficiency, including atmospheric conditions, the efficiency of the power stage, constraints imposed by the topology, the finite rating of silicon devices, and the nonoptimal value of string voltage. In order to fully explore the advantages offered by the above solution, the implementation of a Boost based DMPPT emulator is of primary concern, especially if it behaves as a controlled voltage or current source. The repeatability of experimental tests, the tighter control of climatic conditions, the closing of the gap between the physical dimensions of a PV array and the space available in a university lab, the simplicity with which new algorithms can be tested, and the low maintenance costs are just some of the benefits offered by an emulator. This paper describes the realization and use of a Boost based Distributed Maximum Power Point Tracking (DMPPT) emulator and shows its high flexibility and potential. The device is able to emulate the output current vs. voltage (I-V) characteristics of many commercial PhotoVoltaic (PV) modules with a dedicated Boost DC/DC converter. The flexibility is guaranteed by the ability to reproduce both I = f ( V ) and V = g ( I ) characteristics at different values of not only the irradiance levels but also the maximum allowed voltage across the switching devices. The system design is based on a commercial power supply controlled by a low-cost Arduino board by Arduino (Strambino, Torino, Italy). Data acquisition is performed through a low-cost current and voltage sensor by using a multichannel board by National Instruments. Experimental results confirm the capability of the proposed device to accurately emulate the output I-V characteristic of Boost based DMPPT systems obtained by varying the atmospheric conditions, the rating of silicon devices, and the electrical topology.

APA, Harvard, Vancouver, ISO, and other styles

16

Новачук, Л. В. "THE ANALYSIS OF MULTICHANNEL SYSTEMS WITH REFUSAL IN CHANNELS OF POWER SUPPLY OF THE AIRFIELD LIGHT-SIGNAL COMPLEX." Science-based technologies 13, no. 1 (November 24, 2012). http://dx.doi.org/10.18372/2310-5461.13.5012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Rabiller, Gratianne, yoshimichi sato, SuWai Wong, Zachary Ip, Azadeh Yazdan-shahmorad, and Jialing Liu. "Abstract WP234: Age And Type 2 Diabetes Reduce The Coherence Of Theta And Gamma Oscillations Between Brain Networks." Stroke 53, Suppl_1 (February 2022). http://dx.doi.org/10.1161/str.53.suppl_1.wp234.

Full text

Abstract:

Introduction: The integrity of the functional connectivity across networks relies on synchronous activation of neurons, which reduces with age. Type 2 diabetes (T2DM) is a major risk factor for stroke and cognitive decline and also a precocious aging, yet the electrophysiological changes in T2DM and its interaction with aging is not well understood. The current study sought to delineate the age and diabetic effect on the resting state field potential in regions crucial for cognition. Methods: Local field potential was recorded under urethane anesthesia with multichannel electrodes spanning the cortex and hippocampus (HPC) in control (db/+) and diabetic (db/db) mice, at 200 or 400 days of age. Brain state and neural activity in signal power of δ, θ, γ waves and sharp-wave associated ripples (SWRs) were determined. Coherence and phase-amplitude coupling (PAC) within the HPC or between cortex and HPC were computed to reflect the level of functional communication across brain networks. Results: Our results show that age decreased the θ/δ amplitude (T/D) ratio and the signal power of the theta, gamma and high gamma in the cortex and the HPC. Both age and diabetes prolonged the average duration of SWR clusters and inter-ripple intervals. The greatest SWR signal power was detected in db/db mice at 200 ds of age compared to the other 3 groups, so were the γ power in the cortex and HPC during SWRs. Both age and diabetes reduced θ coherence between cortex and HPC. Age also reduced γ coherence within the hippocampus. Interestingly, while age reduced the coherence of high γ band between hippocampus and CTX, diabetes significantly increased it. To the contrary, age increased coherence in δ within the hippocampal layers. Diabetes decreased the θ-low γ PAC between CA1 and cortex and within CA1. However, diabetes increased δ-γ PAC within the slm, while both age and diabetes increased the δ-γ PAC between the hippocampus and the cortex. Conclusion: The neural activity and synchrony in brain regions crucial for cognitive function is impaired by age and further confounded by T2DM. The perturbation of resting state field potential signal power and coherence may underlie age and diabetes induced loss of functional connectivity and cognitive decline.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Multichannel power supply'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles