Results 41 to 50 of about 305,869 (286)

Capacitance Online Estimation Based on Adaptive Model Observer

open access: yesMATEC Web of Conferences, 2016
As a basic component in electrical and electronic devices, capacitors are very popular in electrical circuits. Conventional capacitors such as electrotype capacitors are easy to degradation, aging and fatigue due to long‐time running and outer damages ...
Cen Zhaohui
doaj   +1 more source

4D spinless topological insulator in a periodic electric circuit [PDF]

open access: yesNational Science Review 2020, 2019
According to the mathematical classification of topological band structures, there exist a number of fascinating topological states in dimensions larger than three with exotic boundary phenomena and interesting topological responses. While these topological states are not accessible in condensed matter systems, recent works have shown that synthetic ...
arxiv   +1 more source

Voltage inverter with push-pull topology to inject energy into electrical systems with modulation SPWM

open access: yesSemina: Ciências Exatas e Tecnológicas, 2013
This paper presents a proposal for a voltage inverter topology based on push-pull converters, switched at high frequency to inject energy into the grid from a source of DC power.
Emerson Charles M. Silva   +1 more
doaj   +1 more source

Circuit Implementation of a Four-Dimensional Topological Insulator [PDF]

open access: yesNature Communications, volume 11, Article number: 2356 (2020), 2020
The classification of topological insulators predicts the existence of high-dimensional topological phases that cannot occur in real materials, as these are limited to three or fewer spatial dimensions. We use electric circuits to experimentally implement a four-dimensional (4D) topological lattice.
arxiv   +1 more source

A hierarchical architecture for increasing efficiency of large photovoltaic plants under non-homogeneous solar irradiation [PDF]

open access: yes, 2019
Under non-homogeneous solar irradiation, photovoltaic (PV) panels receive different solar irradiance, resulting in a decrease in efficiency of the PV generation system.
Binh Doan Van   +8 more
core   +1 more source

MATRIX-TOPOLOGICAL MODEL OF ELECTROMAGNETIC CIRCUITS

open access: yesElektrotehnìka ta Elektroenergetika, 2018
Purpose. To develop a digital model of electromagnetic devices for research and optimization of powerful secondary electric power sources and electromagnetic converters. Methodology.
N. І. SIDDELEV
doaj   +1 more source

Design of a 4.2-5.4 GHz differential LC VCO using 0.35 mu m SiGeBiCMOS technology for IEEE 802.11a applications [PDF]

open access: yes, 2007
In this paper, a 4.2-5.4 GHz, -Gm LC voltage controlled oscillator (VCO) for IEEE 802.11a standard is presented. The circuit is designed with AMS 0.35 mu m SiGe BiCMOS process that includes high-speed SiGe Heterojunction Bipolar Transistors (HBTs ...
Bozkurt, Ayhan   +3 more
core   +1 more source

Exploring topological phase transition and Weyl physics in five dimensions with electric circuits

open access: yesPhysical Review Research, 2022
Weyl semimetals are phases of matter with gapless electronic excitations that are protected by topology and symmetry. Their properties depend on the dimensions of the systems.
Xingen Zheng   +4 more
doaj   +1 more source

Design and Development of a Class EF2 Inverter and Rectifier for Multi-megahertz Wireless Power Transfer Systems [PDF]

open access: yes, 2016
This paper presents the design and implementation of a Class EF2 inverter and Class EF2 rectifier for two -W wireless power transfer (WPT) systems, one operating at 6.78 MHz and the other at 27.12 MHz.
Aldhaher, S, Mitcheson, PD, Yates, DC
core   +1 more source

Improving the Signal to Noise Ratio of QTF Preamplifiers Dedicated for QEPAS Applications

open access: yesApplied Sciences, 2020
The signal-to-noise ratio (SNR) is a major factor that limits the detection sensitivity of quartz-enhanced photoacoustic spectroscopy (QEPAS) sensors. The higher the electrical signal level compared to the noise amplitude is the lower the concentration ...
Piotr Z. Wieczorek   +2 more
doaj   +1 more source

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