Gotowe bibliografie tematyczne / Power Switch Circuits

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Gotowa bibliografia na temat „Power Switch Circuits”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Power Switch Circuits"

Huang, Yao, Gang Qin i Weiqun Liu. "Self-Adaptive Pendulum-Ball Switches for Piezoelectric Synchronous-Extraction Circuits". Micromachines 13, nr 4 (28.03.2022): 532. http://dx.doi.org/10.3390/mi13040532.

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Electronic synchronous switches are usually used to enhance the performance of piezoelectric energy-extraction circuits, but the electronic components leading to additional power consumption are not desired for energy extraction. In view of the advantage of mechanical switches without power consumption, this article proposed a synchronous-switch circuit which can adapt to the amplitude of a cantilever-beam-vibration generator with less energy loss. This mechanical switch consists of two pendulum balls and two buffer springs. This switch mechanism can automatically adapt to the cantilever-displacement amplitude, control the closing and opening of switches with the decrease in phase advance angle, and increase in energy-extraction efficiency. Different from previous adaptive mechanical switches, this unique pendulum-ball mechanism can not only reduce the weight and volume of the generator to improve the energy density, but can also simply adjust the pendulum length to achieve better harvesting performance. It is verified experimentally that the adaptive mechanical switch can close and open automatically under different cantilever amplitudes and excitation frequencies; the results show that the optimal power of the proposed circuit can reach 4.2 times that of the standard circuit. In order to further optimize the adaptive mechanical switch, the parameters of the swing-ball mechanism affecting harvesting performance is analyzed.

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Jamshidpour, Ehsan, Slavisa Jovanovic i Philippe Poure. "Equivalent Two Switches and Single Switch Buck/Buck-Boost Circuits for Solar Energy Harvesting Systems". Energies 13, nr 3 (27.01.2020): 583. http://dx.doi.org/10.3390/en13030583.

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In this paper, a comparative analysis has been presented of two equivalent circuits of non-isolated buck/buck-boost converters under synchronous control, used in a stand-alone Photovoltaic-battery-load system. The first circuit consists of two cascaded buck and buck-boost classical converters with two controllable switches. The buck converter is used to extract the maximum power of the Photovoltaic source, and the buck-boost converter is applied for the output voltage level control. The second circuit consists of a proposed converter with a single controllable switch. In both cases, the switching frequency is used to track the maximum power point and the duty ratio controls the output voltage level. Selected simulation results and experimental tests confirm that the two conversion circuits have identical behavior under synchronous control. This study shows that the single switch converter has a lower size and cost, but it is limited in the possible control strategy.

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Mishra, Brijendra, Vivek Singh Kushwah i Rishi Sharma. "MODELING OF HYBRID MOS FOR THE IMPLEMENTATION OF SWITCHED CAPACITOR FILTER USING SINGLE ELECTRON TRANSISTOR". International Journal of Engineering Technologies and Management Research 5, nr 2 (4.05.2020): 294–300. http://dx.doi.org/10.29121/ijetmr.v5.i2.2018.659.

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In digital integrated circuit architectures, transistors serve as circuit switches to charge and discharge capacitors to the required logic voltage levels. A transistor is a three terminal semiconductor device used to amplify and switch electronic signals and electrical power. It has been observed that the Scaling down of electronic device sizes has been the fundamental strategy for improving the performance of ultra-large-scale integrated circuits (ULSIs). Metaloxide-semiconductor field-effect transistors (MOSFETs) have been the most prevalent electron devices for ULSI applications. A better device will be formed with the help of new technology, with high operating speed low and power consumption, which can be the future of electronics industry. A methodology for the electric simulation of MOS/SET hybrid circuits will be developed. As a result of this, a functional model for the single-electron transistor will obtain and Implement Switched Capacitor Filter with the help of designed hybrid MOS. The SET model can be easily coded in any hardware description language.

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Zou, Aicheng, Zhong Liu i Xingguo Han. "A Low-Power High-Efficiency Adaptive Energy Harvesting Circuit for Broadband Piezoelectric Vibration Energy Harvester". Actuators 10, nr 12 (10.12.2021): 327. http://dx.doi.org/10.3390/act10120327.

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Existing piezoelectric vibration energy harvesting circuits require auxiliary power for the switch control module and are difficult to adapt to broadband piezoelectric vibration energy harvesters. This paper proposes a self-powered and low-power enhanced double synchronized switch harvesting (EDSSH) circuit. The proposed circuit consists of a low-power follow-up switch control circuit, reverse feedback blocking-up circuit, synchronous electric charge extraction circuit and buck-boost circuit. The EDSSH circuit can automatically adapt to the sinusoidal voltage signal with the frequency of 1 to 312.5 Hz that is output by the piezoelectric vibration energy harvester. The switch control circuit of the EDSSH circuit works intermittently for a very short time near the power extreme point and consumes a low amount of electric energy. The reverse feedback blocking-up circuit of the EDSSH circuit can keep the transmission efficiency at the optimal value. By using a charging capacitor of 1 mF, the charging efficiency of the proposed EDSSH circuit is 1.51 times that of the DSSH circuit.

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Liu, Haili, Rui Hua, Yang Lu, Ya Wang, Emre Salman i Junrui Liang. "Boosting the efficiency of a footstep piezoelectric-stack energy harvester using the synchronized switch technology". Journal of Intelligent Material Systems and Structures 30, nr 6 (8.02.2019): 813–22. http://dx.doi.org/10.1177/1045389x19828512.

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In this article, the self-supported power conditioning circuits are studied for a footstep energy harvester, which consists of a monolithic multilayer piezoelectric stack with a force amplification frame to extract electricity from human walking locomotion. Based on the synchronized switch harvesting on inductance (SSHI) technology, the power conditioning circuits are designed to optimize the power flow from the piezoelectric stack to the energy storage device under real-time human walking excitation instead of a simple sine waveform input, as reported in most literatures. The unique properties of human walking locomotion and multilayer piezoelectric stack both impose complications for circuit design. Three common interface circuits, for example, standard energy harvesting circuit, series-SSHI, and parallel-SSHI, are compared in terms of their output power to find the best candidate for the real-time-footstep energy harvester. Experimental results show that the use of parallel-SSHI circuit interface produces 74% more power than the standard energy harvesting counterpart, while the use of series-SSHI circuit demonstrates a similar performance in comparison to the standard energy harvesting interface. The reasons for such a huge efficiency improvement using the parallel-SSHI interface are detailed in this article.

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Zhou, Han, Guoxu Liu, Jianhua Zeng, Yiming Dai, Weilin Zhou, Chongyong Xiao, Tianrui Dang, Wenbo Yu, Yuanfen Chen i Chi Zhang. "Recent Progress of Switching Power Management for Triboelectric Nanogenerators". Sensors 22, nr 4 (21.02.2022): 1668. http://dx.doi.org/10.3390/s22041668.

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Based on the coupling effect of contact electrification and electrostatic induction, the triboelectric nanogenerator (TENG) as an emerging energy technology can effectively harvest mechanical energy from the ambient environment. However, due to its inherent property of large impedance, the TENG shows high voltage, low current and limited output power, which cannot satisfy the stable power supply requirements of conventional electronics. As the interface unit between the TENG and load devices, the power management circuit can perform significant functions of voltage and impedance conversion for efficient energy supply and storage. Here, a review of the recent progress of switching power management for TENGs is introduced. Firstly, the fundamentals of the TENG are briefly introduced. Secondly, according to the switch types, the existing power management methods are summarized and divided into four categories: travel switch, voltage trigger switch, transistor switch of discrete components and integrated circuit switch. The switch structure and power management principle of each type are reviewed in detail. Finally, the advantages and drawbacks of various switching power management circuits for TENGs are systematically summarized, and the challenges and development of further research are prospected.

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Rawi, Muhammad Shawwal Mohamad, Rahimi Baharom i Nur Hidayah Abdullah. "Simulation model of unity power factor uninterruptible power supply topology using single-phase matrix converter". International Journal of Power Electronics and Drive Systems (IJPEDS) 13, nr 2 (1.06.2022): 969. http://dx.doi.org/10.11591/ijpeds.v13.i2.pp969-979.

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This paper presents a computer simulation model of the unity power factor uninterruptible power supply (UPS) topology using single-phase matrix converter (SPMC) that focuses on the switching integration for both rectifier and inverter operations. The proposed integrated switches capable of controlling the SPMC to operate as a rectifier operation to charge the DC battery during the normal operation and to switch the SPMC to operate as an inverter during power outage conditions continuously and instantaneously using a single power converter circuit. The use of a single power converter circuit can solve the typical UPS system that requires at least two separate power converter circuits, thus contributing to the higher power semiconductor losses and complicated control circuits. With the proposed circuit topology, it can improve the power density of the power electronics converter system resulting in low power losses. The active power filter (APF) function has been used to improve the supply current waveform to follow the shape of the sinusoidal reference current to be in phase with the supply voltage waveform, thus reduce the total harmonic distortion (THD) level and improve the power factor. To verify the proposed operation, the selected simulation results are presented, and the proposed work has been done through the MATLAB/Simulink.

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Olowoleni, J. O., A. U. Adoghe, A. Ademola, A. O. Omadoye, A. F. Agbetuyi, H. E. Orovwode i C. O. Awosope. "Construction and Operation of an Electronic Automatic Transfer Switch (Ats)". Global Journal of Energy Technology Research Updates 2, nr 1 (1.04.2015): 01–05. http://dx.doi.org/10.15377/2409-5818.2015.02.01.1.

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The inconsistency of power supply in Nigeria has been a major stumbling block to the advancement of her economy and as such it is an issue that requires immediate attention. Uninterrupted power supply is critical in so many applications especially in cases like hospital operations or financial transactions. This work was born out of the need to provide a cost effective and locally available way to automate the switching between various power sources. This issue can be addressed by implementing an Automatic transfer switch which automatically switches on a backup generator in the absence of the utility supply and transfers the load to the generator. The automatic transfer switch also switches off the backup generator and connects back to the utility supply when the power comes back. The circuitry consists of time delay integrated circuits and switching relays. The present effort is a prototype design to create an automatic transfer switch that can be used in an average Nigerian household because of its affordability and simplicity of operation.

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Xu, Baohe, Li Lu i Dawei Gong. "Research on Real-time Simulation of Power Electronic Circuits Based on Simscape". Journal of Physics: Conference Series 2196, nr 1 (1.02.2022): 012025. http://dx.doi.org/10.1088/1742-6596/2196/1/012025.

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Abstract In order to realize hardware-in-the-loop simulation of commonly used power electronic circuits, a method of joint simulation using Simcape and field programmable gate array (FPGA) is proposed. This article adopts a switch modeling method suitable for high-frequency characteristics, namely the switch function method. It effectively solves the problem of rigidity non-convergence in the modeling of the binary resistance method, as well as the transient error caused by the binary LC method when the system state is switched with the increase of the switching frequency, which reduces the simulation accuracy. Taking the single-phase full-bridge inverter circuit as an example, a Simscape model based on the state-space averaging method was established, and the HDL code was automatically generated using the Simscape HDL Workflow Advisor tool, and the hardware-in-the-loop simulation was completed with FPGA. Finally, the simulation results with Simulink comparison verify the effectiveness and feasibility of the method.

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Malmqvist, R., C. Samuelsson, A. Gustafsson, P. Rantakari, S. Reyaz, T. Vähä-Heikkilä, A. Rydberg, J. Varis, D. Smith i R. Baggen. "A K-Band RF-MEMS-Enabled Reconfigurable and Multifunctional Low-Noise Amplifier Hybrid Circuit". Active and Passive Electronic Components 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/284767.

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A K-band (18–26.5 GHz) RF-MEMS-enabled reconfigurable and multifunctional dual-path LNA hybrid circuit (optimised for lowest/highest possible noise figure/linearity, resp.) is presented, together with its subcircuit parts. The two MEMS-switched low-NF (higher gain) and high-linearity (lower gain) LNA circuits (paths) present 16.0 dB/8.2 dB, 2.8 dB/4.9 dB and 15 dBm/20 dBm of small-signal gain, noise figure, and 1 dB compression point at 24 GHz, respectively. Compared with the two (fixed) LNA subcircuits used within this design, the MEMS-switched LNA circuit functions show minimum 0.6–1.3 dB higher NF together with similar values ofP1 dBat 18–25 GHz. The gain of one LNA circuit path is reduced by 25–30 dB when the MEMS switch and active circuitry used within in the same switching branch are switched off to select the other LNA path and minimise power consumption.

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Rozprawy doktorskie na temat "Power Switch Circuits"

Kemp, Mark A. "Simulation and experimental study of the multichanneling rimfire gas switch". Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4281.

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Thesis (M.S.) University of Missouri-Columbia, 2005.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (July 10, 2006) Includes bibliographical references.

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Kaya, Ibrahim. "A Switch Mode Power Supply For Producing Half Wave Sine Output". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609781/index.pdf.

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In this thesis
analysis, design and implementation of a DC-DC converter with active clamp forward topology is presented. The main objective of this thesis is generating a rectified sinusoidal voltage at the output of the converter. This is accomplished by changing the reference signal of the converter. The converter output is applied to an inverter circuit in order to obtain sinusoidal waveform. The zero crossing points of the converter is detected and the inverter drive signals are generated in order to obtain sinusoidal waveform from the output of the converter. Next, the operation of the DC-DC converter and sinusoidal output inverter coupled performance is investigated with resistive and inductive loads to find out how the proposed topology performs. The design is implemented with an experimental set-up and steady state and dynamic performance of the designed power supply is tested. Finally an evaluation of how better performance can be obtained from this kind of arrangement to obtain a sinusoidal output inverted is thoroughly discussed

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Hutsel, Brian T. Kovaleski Scott D. "Runtime and jitter of a laser triggered gas switch". Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/5783.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on September 24, 2009). Thesis advisor: Dr. Scott Kovaleski. Includes bibliographical references.

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Le, Coz Julien. "Réduction de la consommation statique des circuits intégrés en technologie SOI 65 nm partiellement désertée". Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENT076/document.

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Les technologies SOI partiellement désertées (PD-SOI), permettent de gagner en performances ou en consommation dynamique, par rapport à leur équivalent sur substrat massif (BULK). Leur inconvénient principal est la consommation statique qui est bien supérieure, en raison principalement de l'effet de body flottant de ses transistors. Ce travail propose une technique de réduction de la consommation statique, pour la technologie PD-SOI, basée sur le principe des interrupteurs de puissance. Un nouveau facteur de mérite recherchant le meilleur compromis entre vitesse, courant de fuite et surface est introduit pour la sélection du meilleur interrupteur de puissance. L'interrupteur de puissance proposé apporte par rapport à une solution de référence, et pour le même courant de fuite en mode éteint, une réduction de la résistance équivalente en mode passant de 20%. Les tests comparatifs sur Silicium de blocs LDPC incluant ces montages montrent, entre PD-SOI et BULK, un gain de 20% en vitesse pour la même tension d'alimentation, une réduction de 30% de la consommation dynamique pour la même vitesse et une division par 2 de la consommation statique. Enfin, une bascule de rétention, élément à associer aux interrupteurs de puissance, optimisée pour le PD-SOI, est proposée. Cette bascule est conçue de manière robuste et peu fuyante
Partially depleted SOI technologies (PD-SOI), offer advantages in terms of speed and dynamic power consumption compared to bulk technologies. The main drawback of the PD-SOI technology is its static power consumption, which is higher than bulk one. It is due to the floating body of its transistors. This work presents a new static power consumption design technique based on power switches. A new factor of merit is introduced selecting the power switch with the best trade-off in terms of leakage current, speed and area. A new power switch brings, in comparison to a reference solution, a reduction of 20% of the ON mode equivalent resistance for the same OFF mode leakage current PD-SOI Silicon validation test chips include LDPC bloc supplied by the proposed solution. Comparing to the bulk technology, a speed gain of 20% is measured for the same voltage supply and a dynamic power consumption reduction of 30% at same speed is achieved. This solution allows reducing by 2 the static power consumption. Finally, a retention flip-flop associated to the implementation of power switches and optimized in PD-SOI is proposed. This flip-flop is designed to be robust with a low leakage current

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Du, Sijun. "Energy-efficient interfaces for vibration energy harvesting". Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270359.

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Ultra low power wireless sensors and sensor systems are of increasing interest in a variety of applications ranging from structural health monitoring to industrial process control. Electrochemical batteries have thus far remained the primary energy sources for such systems despite the finite associated lifetimes imposed due to limitations associated with energy density. However, certain applications (such as implantable biomedical electronic devices and tire pressure sensors) require the operation of sensors and sensor systems over significant periods of time, where battery usage may be impractical and add cost due to the requirement for periodic re-charging and/or replacement. In order to address this challenge and extend the operational lifetime of wireless sensors, there has been an emerging research interest on harvesting ambient vibration energy. Vibration energy harvesting is a technology that generates electrical energy from ambient kinetic energy. Despite numerous research publications in this field over the past decade, low power density and variable ambient conditions remain as the key limitations of vibration energy harvesting. In terms of the piezoelectric transducers, the open-circuit voltage is usually low, which limits its power while extracted by a full-bridge rectifier. In terms of the interface circuits, most reported circuits are limited by the power efficiency, suitability to real-world vibration conditions and system volume due to large off-chip components required. The research reported in this thesis is focused on increasing power output of piezoelectric transducers and power extraction efficiency of interface circuits. There are five main chapters describing two new design topologies of piezoelectric transducers and three novel active interface circuits implemented with CMOS technology. In order to improve the power output of a piezoelectric transducer, a series connection configuration scheme is proposed, which splits the electrode of a harvester into multiple equal regions connected in series to inherently increase the open-circuit voltage generated by the harvester. This topology passively increases the rectified power while using a full-bridge rectifier. While most of piezoelectric transducers are designed with piezoelectric layers fully covered by electrodes, this thesis proposes a new electrode design topology, which maximizes the raw AC output power of a piezoelectric harvester by finding an optimal electrode coverage. In order to extract power from a piezoelectric harvester, three active interface circuits are proposed in this thesis. The first one improves the conventional SSHI (synchronized switch harvesting on inductor) by employing a startup circuitry to enable the system to start operating under much lower vibration excitation levels. The second one dynamically configures the connection of the two regions of a piezoelectric transducer to increase the operational range and output power under a variety of excitation levels. The third one is a novel SSH architecture which employs capacitors instead of inductors to perform synchronous voltage flip. This new architecture is named as SSHC (synchronized switch harvesting on capacitors) to distinguish from SSHI rectifiers and indicate its inductorless architecture.

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Masoud, Khalid Hasan. "Circuits and controls for grid-connected inverters". Thesis, Queensland University of Technology, 2002.

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Darwish, M. K. E.-S. "Switched-capacitor filters for power applications". Thesis, Brunel University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375203.

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Pollock, Charles. "Power converter circuits for switched reluctance motors". Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/844.

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KRUTKO, OLEG B. "OPTICALLY SWITCHED INTEGRATED CIRCUIT POWER CONVERTERS". University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin973790864.

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Zhang, Xuan. "Switched Capacitor Circuit Based Isolated Power Converters". The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461327493.

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Książki na temat "Power Switch Circuits"

Sturman, John C. High-voltage, high-power, solid-state remote power controllers for aerospace applications. [Washington, D.C.]: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985.

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Ramshaw, Raymond. Power electronics semiconductor switches. Wyd. 2. London: Chapman & Hall, 1993.

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Baumann, E. D. Operational characteristics of a 200⁰C LC parallel resonant circuit. [Washington, DC]: National Aeronautics and Space Administration, 1995.

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N, Hammoud Ahmad, i United States. National Aeronautics and Space Administration., red. Operational characteristics of a 200b□-s□p0b□-s□sC LC parallel resonant circuit. [Washington, DC]: National Aeronautics and Space Administration, 1995.

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Mack, Raymond A. Demystifying switching power supplies. Amsterdam: Elsevier/Newnes, 2005.

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Brown, Marty. Practical switching power supply design. San Diego: Academic Press, 1990.

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Instruments, Texas. Power supply circuits data book: Voltage references, voltage regulators, PWM controllers, supervisors, switches, optoisolators, and special functions. [Dallas, Tex.]: Texas Instruments, 1995.

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Lehn, Peter W. Modelling and control of switched circuits for high power applications. 1999.

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Części książek na temat "Power Switch Circuits"

Qadeer, Shaik, Ajaz Fatima, Asfia Aleem i Amreen Begum. "Smart Switch for Power Saving". W Nanoelectronics, Circuits and Communication Systems, 105–14. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0776-8_10.

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Ramshaw, R. S. "Switches in Circuits". W Power Electronics Semiconductor Switches, 25–89. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4757-6219-8_2.

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Barbi, Ivo, i Fabiana Pöttker. "Basic Electric Circuits with Switches". W Power Systems, 1–31. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96178-1_1.

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Erickson, Robert W., i Dragan Maksimović. "Circuit Averaging, Averaged Switch Modeling, and Simulation". W Fundamentals of Power Electronics, 547–83. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43881-4_14.

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Stauth, Jason. "Resonant Switched Capacitor Power Converters and Architectures". W Power Management Integrated Circuits, 145–70. Boca Raton : Taylor & Francis Group, 2016. | Series: Devices, circuits, and systems: CRC Press, 2017. http://dx.doi.org/10.1201/9781315373362-5.

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Perreault, David J., Charles R. Sullivan i Juan M. Rivas. "GaN in Switched-Mode Power Amplifiers". W Integrated Circuits and Systems, 181–223. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77994-2_8.

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Pal, Ajit. "Switched Capacitance Minimization". W Low-Power VLSI Circuits and Systems, 213–59. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1937-8_8.

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Salem, Loai G., i Patrick P. Mercier. "Design of Recursive Switched-Capacitor DC–DC Converters". W Power Management Integrated Circuits, 171–201. Boca Raton : Taylor & Francis Group, 2016. | Series: Devices, circuits, and systems: CRC Press, 2017. http://dx.doi.org/10.1201/9781315373362-6.

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Zitta, Heinz. "Smart Power Circuits for Power Switches Including Diagostic Functions". W Analog Circuit Design, 249–64. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-2353-3_14.

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Ki, Wing-Hung. "Switched-Capacitor Power Converters". W Advanced Tutorial on Analog Circuit Design, 119–208. New York: River Publishers, 2023. http://dx.doi.org/10.1201/9781003388524-3.

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Streszczenia konferencji na temat "Power Switch Circuits"

Kelly, David E., Kelly Mekechuk i Thad Miller. "Switch-mode power amplifier linearization". W 2008 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2008. http://dx.doi.org/10.1109/rfic.2008.4561407.

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Birtek, Gizem, i Ali Bekir Yildiz. "Analysis of Switched Capacitor Circuits Based on Unified Ideal Switch Model". W 2020 2nd Global Power, Energy and Communication Conference (GPECOM). IEEE, 2020. http://dx.doi.org/10.1109/gpecom49333.2020.9247910.

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Yudell, Alexander C., Shaun E. Koktavy i James D. Van de Ven. "Crank-Slider Spool Valve for Switch-Mode Circuits". W ASME/BATH 2015 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fpmc2015-9606.

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A key component of switch-mode hydraulic circuits is a high-speed two-position three-way valve with a variable duty cycle. This paper presents a new valve architecture that consists of two valve spools that are axially driven by crank-slider mechanisms. By phase shifting the two crank links, which are on a common crankshaft, the duty cycle of the valve is adjusted. The two spools split and re-combine flow such that two switching cycles occur per revolution of the crankshaft. Because the spools move in a near-sinusoidal trajectory, the peak spool velocities are achieved at mid-stroke where the valve land transitions across the ports, resulting in short valve transition times. The spool velocity is lower during the remainder of the cycle, reducing viscous friction losses. A dynamic model is constructed of this new valve operating at 120 Hz switching frequency in a switch-mode circuit. The model is used to illustrate design trade-offs and minimize energy losses in the valve. The resulting design solution transitions to the on-state in 5% of the switching period and the combined leakage and viscous friction in the valve dissipate 1.7% of the total power at a pressure of 34.5MPa and volumetric flow rate of 22.8L/min.

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Bunz, Bernd, Rolf Reber, Patrick Schuh i Martin Oppermann. "High power broadband GaN switch MMICs". W 2015 10th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2015. http://dx.doi.org/10.1109/eumic.2015.7345095.

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Beckstrand, Brandon K., i James D. Van De Ven. "Experimental Validation of a Soft Switch for a Virtually Variable Displacement Pump". W ASME/BATH 2014 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fpmc2014-7857.

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As an alternative to a variable displacement pump, a fixed displacement pump can be made to function as a virtually variable displacement unit by using a high-speed valve to pulse-width modulate the flow, creating a switch-mode circuit. A major drawback of switch-mode circuits is throttling and compressibility energy losses during valve transitions. One method of minimizing these losses is soft switching, where the flow that would normally be throttled across the high speed valve during transitions is absorbed in a small variable volume chamber. The concept for a novel soft switch mechanism that uses the pressure signal at the exit of the pump to release a lock on the soft switch chamber was previously presented. This paper describes the soft switch concept in more detail and outlines a numerical model used to predict and optimize soft switch operation. Experimental results are presented that demonstrate proper operation of the soft switch lock-release mechanism.

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Zwerger, Michael, Gaurav Shrivastava i Helmut Graeb. "Power-down synthesis for analog circuits including switch sizing". W 2016 13th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD). IEEE, 2016. http://dx.doi.org/10.1109/smacd.2016.7520645.

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Tjarnstrom, R. "Power dissipation estimate by switch level simulation (CMOS circuits)". W 1989 IEEE International Symposium on Circuits and Systems. IEEE, 1989. http://dx.doi.org/10.1109/iscas.1989.100492.

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Fusetto, Samuele, Elisabetta Moisello, Francesco Cannillo, Piero Malcovati i Edoardo Bonizzoni. "A Power Switch Size Optimization Strategy for Multi-Switch DC-DC Converters". W 2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS). IEEE, 2021. http://dx.doi.org/10.1109/icecs53924.2021.9665603.

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Wu, P. H., i Y. C. Shu. "Design of Rectified Piezoelectric Power Generators by Finite Element Methods". W ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7431.

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The article proposes designing rectified piezoelectric power generators based on the direct finite element method. It accounts for the consideration of common interface circuits such as the standard and parallel-/series-SSHI (synchronized switch harvesting on inductor) circuits, and complicated structural configurations such as arrays of piezoelectric oscillators. The proposed model suggests replacing the energy harvesting circuit by an equivalent load impedance in series with negative piezoelectric capacitance. As the expression of the equivalent load impedance can be explicitly derived, the proposed finite element approach is capable of handling common interface circuits without resorting to circuit solvers. Finally, the model is extended to the consideration of SECE (synchronized electric charge extraction) circuit which offers an advantage of independence of harvested power on external loads.

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Del Croce, P., J. Hadzi-Vukovic, B. Meldt i M. Ladurner. "Configurable High Side Power Switch in Smart Power Technology". W 2007 14th International Conference on Mixed Design of Integrated Circuits and Systems. IEEE, 2007. http://dx.doi.org/10.1109/mixdes.2007.4286227.

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Raporty organizacyjne na temat "Power Switch Circuits"

Sanders, Seth R., i George C. Verghese. Synthesis of Averaged Circuit Models for Switched Power Converters. Fort Belvoir, VA: Defense Technical Information Center, listopad 1989. http://dx.doi.org/10.21236/ada455873.

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Casinovi, Giorgio. Development of Cad Tools for Power Estimation in Continuous-Time and Switched-Capacitor Analog Circuits. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1998. http://dx.doi.org/10.21236/ada373430.

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Casinovi, Giorgio. Development of CAD Tools for Power Estimation in Continuous-Time and Switched-Capacitor Analog Circuits. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1998. http://dx.doi.org/10.21236/ada375770.

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