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Low‐Duty‐Ratio Patterning on a Heterogeneous Surface
Advanced Functional Materials, 2005AbstractA thick film of patterned heterogeneous surface is introduced, in which the surface heterogeneity arises due to a difference in the characteristics of interfacial potential. When a liquid film is coated onto such a surface, the film is unstable only on certain parts of the surface and, consequently, dewetting takes place.
D. H. Kim +3 more
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Direct duty ratio control of connected converter in DC microgrid
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018A direct duty ratio control (DDRC) method is proposed in this paper. The method uses the change of DC bus voltage in each control period to predict the inductor current. To make the DC bus voltage work in a definite range, a linear control relationship between the DC bus voltage and the inductance current is established. In order to improve the control
Na Zhi +3 more
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Effects of duty ratio on microwave-enhanced laser ignition
Laser Ignition Conference, 2015Effects of the variation of microwave duty ratio on minimum laser ignition energy was investigated in microwave-enhanced laser ignition of methane/air mixture. A reduction of incident energy required for the laser ignition was achieved in microwave input energy with duty ratio.
Liu Chen +5 more
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The effect of duty ratio in phase shift mask design
Microelectronic Engineering, 1994Abstract In transmission phase shift mask, variety of linewidths can be obtained by changing the duty ratio (space to linewidth ratio) of line and space structures. It has been observed that besides the change in linewidth, it also shifts the resist patterns which is quite substantial for subhalf micron technology device design rules.
B.P. Mathur, K.I. Arshak
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Off-Nominal Operation of Class-E Amplifier at Any Duty Ratio
IEEE Transactions on Circuits and Systems I: Regular Papers, 2007Design equations for satisfying the suboptimum operating condition, i.e., only the zero-voltage switching (ZVS) condition, of a class-E amplifier with a linear shunt capacitance at any duty ratio are derived. By exploiting the suboptimum class-E operation, various amplifier parameters such as operating frequency, output power, load resistance, and ...
Tadashi Suetsugu, Marian K. Kazimierczuk
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Duty ratio control of a rotary PWM valve with periodic measurement error
2009 American Control Conference, 2009The focus of this paper is on estimating system states in the presence of repetitive measurement noise. This estimation technique is applied to a novel self-spinning high speed rotary on/off valve that is being developed for pulse width modulating (PWM) fluid flow. The PWM duty ratio is determined by the valve spool's axial position. Unfortunately, the
Meng Wang, Perry Y. Li
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ON THE ESSENCE OF THE CONSTITUTIONAL DUTIES OF CITIZENS. RATIO OF "NECESSITY" AND "DEBT" CATEGORIES
Вестник Московской академии Следственного комитета Российской Федерации, 2021В статье уделяется особое внимание исследованию феномена юридической обязанности, в частности конституционных обязанностей граждан, а также анализу и соотношению категорий «необходимость» и «долг» в их конституционно-правовом понимании. Приведены и проанализированы точки зрения как ведущих современных теоретиков права, так и ученых-государствоведов ...
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Analysis of Load-independent Class-E Inverter at Any Duty Ratio
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019This paper presents an easy-to-use analytical design approach of the load-independent class-E inverter at any duty ratio. By using the analytical approach, it is possible to maintain the amplitude of the output voltage and the operation of the zero-voltage switching.
Natsumi Obinata +3 more
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Maximum Operating Frequency of Class-E Amplifier at Any Duty Ratio
IEEE Transactions on Circuits and Systems II: Express Briefs, 2008This paper shows that the maximum operating frequency of the class-E power amplifier depends on the transistor duty ratio. The maximum operating frequency increases as the duty ratio decreases under zero-voltage switching and zero-derivative switching conditions at fixed values of the output power, dc supply voltage, and shunt capacitance.
Tadashi Suetsugu, Marian K. Kazimierczuk
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