Готові списки джерел за темами / Stabilized voltage source

Добірка наукової літератури з теми "Stabilized voltage source"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Stabilized voltage source"

Dierikx, E. F. "A MEMS-Stabilized AC Voltage Reference Source." IEEE Transactions on Instrumentation and Measurement 56, no. 2 (April 2007): 313–15. http://dx.doi.org/10.1109/tim.2007.890799.

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Feng, Ze Hu. "The Designation of Programmable Direct-Current Voltage-Stabilized Source Based on Micro Controller Unit." Advanced Materials Research 542-543 (June 2012): 595–99. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.595.

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Along with the rapid development of the electric technology, the direct-current power was wide application, its quality immediately influence operating performance of electrical equipment or controlling system. At present, basic link of each direct-current power is approximately same in the market. They include the alternating current supply, alternating current transformer (sometimes not to use), the leveling circuit, and the filter voltage-stabilizer circuit and so on. This article introduced the method and the principle of MCU controlling system which was used in the direct-current voltage-stabilized power, realizing the digit controlling adjustment of voltage-stabilized source and step-by-step with 0.1V under the wide output. In addition, it has analyzed the working principle to cause voltage stable and the method to adjust it. This power source has the characteristic that simple to adjust the voltage, direct-viewing to be read, stable voltage output and be advantageous for the intellectualized management.

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Makinen, R. M., and M. A. Kivikoski. "A stabilized resistive voltage source for FDTD thin-wire models." IEEE Transactions on Antennas and Propagation 51, no. 7 (July 2003): 1615–22. http://dx.doi.org/10.1109/tap.2003.813613.

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LEE, YONG K., and TAEHO JUNG. "EFFECT OF EXCESS NEGATIVE IONS ON ANODIC OXIDATION IN MICROARC OXIDATION OF TITANIUM." Modern Physics Letters B 23, no. 06 (March 10, 2009): 849–54. http://dx.doi.org/10.1142/s0217984909019107.

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The effects of the electrical bias conditions on oxide film during titanium MAO (microarc oxidation) were investigated. Since DC voltage showed very low stabilized currents but produced oxide films with poor quality, the magnitude of applied voltages, duty cycles, and frequencies were modulated to control the quality of the oxide film. Pulsed voltage showed increased stabilized currents but produced better oxide films. The change in the stabilized currents was attributed to the change of the resistances of the film and local electrolyte adjacent to the anode. Analysis of the film thickness and the resistances of the film calculated from the experiments led to conclusion that the resistance of the electrolyte adjacent to the anode was increased if the negative ions attracted towards the anode were not reacted as fast as the positive ions at the cathode. The increase in resistance was attributed to the excess negative ions repelling other negative ions. In order to relax the negative ions, it appeared that a pulsed voltage source was essential. However, higher off-duty cycle was not the best choice to produce good oxide films indicating that the electrical bias condition depended on the experimental configuration.

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Xie, Jiang Hong, Jin Ping Wang, Ming Xia Shang Guan, and Yang Shao. "Research on Energy Saving Directing at Building Lighting System." Applied Mechanics and Materials 253-255 (December 2012): 679–83. http://dx.doi.org/10.4028/www.scientific.net/amm.253-255.679.

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The thesis states the building lighting regulated system composition, basic functions and work processes. Based on the compensation principle, making use of transformer controlled voltage source and the controlled current source model, the thesis analyzes the principle of the system voltage. According to the illumination and life span character of the lighting lamps and lanterns in different voltage, the thesis gets the optimal power supply of building lighting system electric lamps and lanterns. Finally, the building indoor lighting using optimal power supply voltage lighting and energy saving rate of building exterior wall using time-varying stabilized voltage control scheme are analyzed and calculated.

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Prevosto, L. "On the dynamics of cutting arc plasmas: the role of the power supply ripple." Advanced Electromagnetics 1, no. 2 (September 5, 2012): 12. http://dx.doi.org/10.7716/aem.v1i2.35.

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The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the non-equilibrium plasma inside the nozzle of a 30 A oxygen cutting torch with a 7 % ripple level of its power source are reported in this work.

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Sattianadan, D., G. R. Prudhvi Kumar, R. Sridhar, Kuthuru Vishwas Reddy, Bhumireddy Sai Uday Reddy, and Panga Mamatha. "Investigation of low voltage DC microgrid using sliding mode control." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 4 (December 1, 2020): 2030. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp2030-2037.

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As the requirement of power increases, the use of renewable energy resources has become prominent. The power collected from these energy resources needs to be converted using AC-DC or DC-DC converters. The control of DC-DC converters is a complex task due to its non-linearity in the converter introduced by the external changes such as source voltage, cable resistance and load variations. Converters are to be designed to obtain a well stabilized output voltage and load current for variable source voltages and load changes. Droop control method is the most abundantly used technique in controlling the parallel converters. The major limitations of the conventional droop control technique are circulating current issues and improper load sharing. The proposed work is to resolve these issues by integrating Sliding Mode Controller (SMC) with the converter in order to enhance the performance of DC microgrid. The entire control system was designed by taking the output voltage error as the control variables. Similarly, droop control with PI and PID were also performed and all these techniques were simulated and compared using MATLAB/Simulink. The experimental results show that the proposed sliding mode controller technique provides good overall performance and is suitable against variable voltage and load changes.

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Książek, Ireneusz. "Second order reflection from crystals used in soft X-ray spectroscopy." Nukleonika 60, no. 2 (June 1, 2015): 263–65. http://dx.doi.org/10.1515/nuka-2015-0046.

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Abstract In this note the ratio of the second to the first order reflection is determined for the KAP and PbSt crystals, for wavelengths corresponding to the Al K-line emission. The source of the radiation was a low-voltage stabilized X-ray tube. The X-rays were detected with a Bragg spectrometer equipped with a proportional counter detector. The signal measured by the proportional counter was subsequently pulse height analyzed.

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Aketagawa, Masato, and Thanh Dong Nguyen. "Picometer mechanical displacement measurement using heterodyne interferometer with phase-locked loop." EPJ Web of Conferences 238 (2020): 06003. http://dx.doi.org/10.1051/epjconf/202023806003.

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In this paper, we show picometer-order mechnical displacmment measurements using a heterodyne interferometer with a phase-locked loop (PLL). A heterodyne light source for the interferometer is implemented with a frequency stabilized HeNe laser and two acousto-optic modulators. A real time phase measurement is performed by the PLL, whose software is programmed in a field-programmable gate array (FPGA). A stiff parallel spring stage combined with a high-voltage piezoelectric actuator is used to generate picometer-order mechanical motion. With the above implementations, mechanical displacement of 10 picometer or less can be measured.

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Liu, Chen Yao, and Kuo Bin Liu. "Measurement and Testing of the NSRRC Power Supply for Conduction EMI." Advanced Materials Research 818 (September 2013): 153–58. http://dx.doi.org/10.4028/www.scientific.net/amr.818.153.

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The correction power supplies are working in the Taiwan Photon Source (TPS) of NSRRC. They are required to output current at high quality and with high performance and that has long-term stability, with output current ripple required to be less than 10ppm. The TPS comprises more than 1200 units of independent power-supplymodules working together when the beam current is at3-GeV status. The power supplies are all working in current mode. We willplan to build a new measurement laboratory for conduction Electromagnetic Interference (EMI) to measure and to test the switching DC power bus thatfeeds the correction power supplies. We can get conduction electromagnetic interferencenoise from the measurement equipmentto measure the switching DC power bus is an AC-to-DC voltage bus source.With the LISN obtainingthe conduction noise, it is a high-frequency voltage noise generated by the switching mode of the power-supply conduction noise. The current signal passes an AC source-impedance stabilized network LISN, and a spectrum analyzer obtains the conduction noise. We use a noise separator to separate the common EMI noise and the difference-mode EMI noise for EMI filtering design. The measurement results are illustrated in this paper.

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Більше джерел

Дисертації з теми "Stabilized voltage source"

Дроздов, Денис Миколайович. "Багатоканальний блок живлення радіометричних приймачів". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/28995.

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У дипломному проекті розроблено спеціальний багатоканальний блок живлення для дослідного НВЧ-радіометричного стенду. Особливістю даного блоку живлення є низький рівень шумів та пульсацій вихідних напруг, їхня висока стабільність. У проекті проведено аналіз відомих конструкцій, враховуючи всі переваги та недоліки розглянутих рішень, особливі вимоги до конструкції, електричних параметрів та функціоналу, що визначаються його призначенням, було спроектовано багатоканальний блок живлення радіометричних приймачів, а саме виконано: розроблення структурної схеми, розроблення схеми електричної принципової, вибір елементної бази, вибір компонентної бази, розроблення друкованих плат, аналіз конструкції. Пристрій успішно експлуатується в складі дослідного НВЧ-радіометричного сканеру у ДНДЦ «Айсберг».
In the graduation thesis a special multichannel power supply for the experimental microwave-radiometric test bench was developed. The main features of this power supply are low noise, low pulsation level and high stability of the output voltages. The thesis includes the analysis of known designs, taking into account all the advantages and disadvantages of the existing solutions, special requirements for the design, electrical parameters and functions of said power supply. Thesis focuses on development of power supply that complies with aforementioned considerations, namely: development of the structural scheme, development of the schematics, selection of components, development of printed circuit boards, and analysis of the overall design. The device is successfully operated as part of an experimental microwave-radiometric scanner at SRC "Iceberg".

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Antonopoulos, Antonios. "On the Internal Dynamics and AC-Motor Drive Application of Modular Multilevel Converters." Doctoral thesis, KTH, Elektrisk energiomvandling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156200.

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This thesis is an effort to investigate the operation and the performanceof modular multilevel converters (M2Cs). Proven to be the most promisingtopology in high-voltage high-power applications, it is necessary to put aneffort in understanding the physical laws that govern the internal dynamicsof such converters, in order to design appropriate control methods. AlthoughM2Cs belong to the well-studied family of voltage-source converters (VSCs),and claim a modular structure, their control is significantly more complicatedcompared to two- or three-level VSCs, due to the fact that a much highernumber of switches and capacitors are needed in such a topology. This thesishighlights the important parameters that should be considered when designingthe control for an M2C, through analyzing its internal dynamics, and alsosuggests ways to control such converters ensuring stable operation withoutcompromising the performance of the converter.Special focus is given on ac motor-drive applications as they are very demandingand challenging for the converter performance. Interactions betweenthe internal dynamics and the dynamics of the driven motor are experimentallyinvestigated. The problem of operating the converter when connectedto a motor standing still is visited, even under the condition that a greatamount of torque and current are requested, in order to provide an idea forthe converter requirements under such conditions. Finally, an optimization ofthe converter operation is suggested in order to avoid overrating the convertercomponents in certain operation areas that this is possible.All analytical investigations presented in this thesis are confirmed by experimentalresults on a laboratory prototype converter, which was developedfor the purposes of this project. Experimental verification proves the validityof the theoretical investigations, as well as the correct performance of thecontrol methods developed during this project on a real, physical converter,hoping that the results of this thesis will be useful for large-scale implementations,in the mega- or even giga-watt power range.
Denna avhandling är ett försök att undersöka drift och egenskaper avmodulära multinivåomvandlare (M2C:er). Eftersom denna topologi anses varaden mest lovande inom högspänings-högeffekt-tillämpningar är, och somett underlag för att kunna formulera lämpliga styrmetoder, är det nödvändigtatt lägga kraft i att försöka förståde fysikaliska lagar som styr den inredynamiken i sådana omvandlare. Även om M2C:erna tillhör den välstuderadefamiljen av spänningsstyva omvandlare (VSC:er), och har en modulärstruktur, är deras reglering avsevärt mer komplicerad jämfört med två- ellertre-nivåomvandlare, eftersom ett mycket större antal switchar och kondensatorerär nödvändiga i en sådan topologi. Denna avhandling sätter fingretpå de parametrar som måste beaktas när man konstruerar regleringen för enM2C, genom att analysera den interna dynamiken, samt att föreslå sätt attstyra sådana omvandlare såatt stabil drift kan säkerställas utan att negativtpåverka prestanda.Ett speciellt fokus läggs på växelströmsmotordrifter eftersom de är särskiltutmanande vad gäller prestanda. Växelverkan mellan den interna dynamikenoch motorns dynamik undersöks experimentellt. Problemet att driva motornvid stillestånd behandlas även i fallet med hög ström och högt moment för atterhålla kunskap om kraven påomvandlaren i sådana fall. Slutligen föreslås enoptimering av omvandlarens drifttillstånd för att undvika överdimensioneringav omvandlarens komponenter i de fall detta är möjligt.Alla analytiska undersökningar som läggs fram i denna avhandling är bekräftadegenom experimentella resultat från en laboratorieomvandlare, somutvecklats inom ramen för detta arbete. Den experimentella verifieringen bevisargiltigheten av alla teoretiska undersökningar. Den visar också på demycket goda prestanda som de utvecklade styrmetoderna har vid drift aven verklig fysisk omvandlare. Förhoppningen är att resultaten från detta arbetekan komma till använding i storskaliga implementerinar i mega- ellergiga-wattklassen.

QC 20141201

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Частини книг з теми "Stabilized voltage source"

Kumar, Vulisi Narendra, Gayadhar Panda, and Bonu Ramesh Naidu. "Seamless Control and Unified Dynamic Energy Management in a Renewable/Clean Energy Integrated Self-Reliant DC Microgrid." In Handbook of Research on Power and Energy System Optimization, 511–51. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3935-3.ch015.

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The growing demand for electrical energy calls for the assimilation of renewable energy sources to the main utility grid. Multiple renewable energy sources (RESs) like solar PV array, wind turbine, micro-hydro plant, etc. can be combined and controlled to form a microgrid. In spite of the availability of different microgrid topologies, DC microgrid largely facilitates the injection of DC power from various renewable energy sources into the stabilised DC power pool. The requirement for a minimal number of conversion stages, simple structure, economic operation, and numerous localised applications are driving factors for the DC microgrid technology. The mettle of the DC microgrid technology lies in choosing the appropriate microgrid participants for energy interchange and the suitable supervisory control to tap power from the microgrid partakers even after respecting their operating constraints. The use of high gain DC-DC converters is inevitable in DC microgrid due to the low terminal voltage levels of different RESs.

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Kumar, Vulisi Narendra, Gayadhar Panda, and Bonu Ramesh Naidu. "Seamless Control and Unified Dynamic Energy Management in a Renewable/Clean Energy Integrated Self-Reliant DC Microgrid." In Research Anthology on Clean Energy Management and Solutions, 1083–122. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-9152-9.ch047.

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Kumar, Vulisi Narendra, Gayadhar Panda, and Bonu Ramesh Naidu. "Seamless Control and Unified Dynamic Energy Management in a Renewable/Clean Energy Integrated Self-Reliant DC Microgrid." In Research Anthology on Smart Grid and Microgrid Development, 253–92. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3666-0.ch013.

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Тези доповідей конференцій з теми "Stabilized voltage source"

Qiao, Yanping, Jinhai Mo, and Wei Li. "Design of Micro-ripple PWM-Cuk EBW High Voltage Stabilized Source." In 2015 3rd International Conference on Advances in Energy and Environmental Science. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icaees-15.2015.58.

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Shaojia, He, Mo Jinhai, Wei Shouqi, and Huang Dao. "Design of EBW Stabilized High-Voltage Source Based on Fuzzy PID Control." In 2007 Chinese Control Conference. IEEE, 2006. http://dx.doi.org/10.1109/chicc.2006.4347612.

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Shaojia He, Jinhai Mo, Shouqi Wei, and Dao Huang. "Design of a Novel PWM Boost Type EBW Stabilized High Voltage Source." In 2007 5th International Conference on Communications, Circuits and Systems. IEEE, 2007. http://dx.doi.org/10.1109/icccas.2007.4348283.

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Borodin, Nicolay I., and Elena V. Reshetnikova. "A Reliability Indices Evaluation of Stabilized DC Voltage Source in Starting and Nominal Modes." In 2007 8th Siberian Russian Workshop and Tutorial on Electron Devices and Materials. IEEE, 2007. http://dx.doi.org/10.1109/sibedm.2007.4292937.

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van der Giet, M., and K. Hameyer. "Stabilized series compensation of induction machines in motor operation fed by voltage source inverter." In 2005 IEEE 11th European Conference on Power Electronics and Applications. IEEE, 2005. http://dx.doi.org/10.1109/epe.2005.219279.

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Mo, Jinhai, Shaojia He, and Yunping Zou. "Fuzzy PID Controller Design for PWM-Buck EBW Stabilized High-Voltage Source Using Saber-Matlab Co-simulation." In 2007 IEEE International Conference on Control and Automation. IEEE, 2007. http://dx.doi.org/10.1109/icca.2007.4376711.

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Mondal, Gopal, Joachim Bamberger, Michael Bernhard Buhl, and Sebastian Nielebock. "Voltage source operation of parallel PV/wind inverters-stabilized hybrid power plants in “diesel off-mode”- an experimental verification." In 2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG). IEEE, 2017. http://dx.doi.org/10.1109/pedg.2017.7972452.

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Leblanc, Diane, Babak Nahid-Mobarakeh, Benjamin Pham, Serge Pierfederici, and Bernard Davat. "Stability analysis and active stabilization by a centralized stabilizer of Voltage-Source-Rectifier Loads in AC microgrids." In 2013 IEEE Industry Applications Society Annual Meeting. IEEE, 2013. http://dx.doi.org/10.1109/ias.2013.6682524.

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Chu Cheong, Matthew K., Dongmei Chen та Pengwei Du. "Decentralized ℋ∞ Control in Microgrids to Mitigate Renewable Intermittency". У ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9771.

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The goal of this paper is to control the dynamics of an islanded microgrid, a small-scale power system with distributed generation. An islanded microgrid is disconnected from the larger, main grid, and must maintain voltage and frequency standards using only local generation. As a result, islanded microgrids are more vulnerable to fluctuations in power supply and demand; this is especially relevant for intermittent renewable sources like wind turbines. The system is stabilized with static-output-feedback ℋ∞ γ-suboptimal control. This is a multiple-input multiple-output (MIMO) controller in which the measured data is used as the direct input to a static gain matrix, whose output is in turn used to control the closed-loop system. In order to judge the performance of the decentralized controllers, the micgorid is controlled first in a centralized manner, where each controller has access to all measured state variables. Decentralized controllers are then synthesized by casting the problem as a convex program, where each controller only has access to locally measured variables. Control performance is compared with respect to a switched-on wind turbine, where we see that the decentralized controller effectively mitigates the system disturbance due to the renewable intermittency.

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Anand, Sandeep V., D. Roy Mahapatra, Niraj Sinha, J. T. W. Yeow, and R. V. N. Melnik. "Field Emission Efficiency of a Carbon Nanotube Array Under Parasitic Nonlinearities." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39558.

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Carbon Nanotubes (CNTs) grown on substrates are potential electron sources in field emission applications. Several studies have reported the use of CNTs in field emission devices, including field emission displays, X-ray tube, electron microscopes, cathode-ray lamps, etc. Also, in recent years, conventional cold field emission cathodes have been realized in micro-fabricated arrays for medical X-ray imaging. CNT-based field emission cathode devices have potential applications in a variety of industrial and medical applications, including cancer treatment. Field emission performance of a single isolated CNT is found to be remarkable, but the situation becomes complex when an array of CNTs is used. At the same time, use of arrays of CNTs is practical and economical. Indeed, such arrays on cathode substrates can be grown easily and their collective dynamics can be utilized in a statistical sense such that the average emission intensity is high enough and the collective dynamics lead to longer emission life. The authors in their previous publications had proposed a novel approach to obtain stabilized field emission current from a stacked CNT array of pointed height distribution. A mesoscopic modeling technique was employed, which took into account electro-mechanical forces in the CNTs, as well as transport of conduction electron coupled with electron–phonon induced heat generation from the CNT tips. The reported analysis of pointed arrangements of the array showed that the current density distribution was greatly localized in the middle of the array, the scatter due to electrodynamic force field was minimized, and the temperature transients were much smaller compared to those in an array with random height distribution. In the present paper we develop a method to compute the emission efficiency of the CNT array in terms of the amount of electrons hitting the anode surface using trajectory calculations. Effects of secondary electron emission and parasitic capacitive nonlinearity on the current-voltage signals are accounted. Field emission efficiency of a stacked CNT array with various pointed height distributions are compared to that of arrays with random and uniform height distributions. Effect of this parasitic nonlinearity on the emission switch-on voltage is estimated by model based simulation and Monte Carlo method.

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