Results 91 to 100 of about 63,467 (302)
Simulation and Implementation a Non-Isolated Buck Converter at ZCS Condition [PDF]
Journal of Intelligent Procedures in Electrical Technology, 2013 A new soft-switching resonant inverting-buck converter with high efficiency is presented. The proposed converter steps down and inverts the input voltage.
Nahid Hematian, Masoud Jabari
doaj
半導体光増幅器を用いた光デジタル・アナログ相互変換 [PDF]
, 2020 デジタル・アナログ変換(D/A変換)とアナログ・デジタル変換(A/D変換)は，電子デバイスや光学システム内でデジタル信号とアナログ信号を接続するための重要な機能であり，通信ネットワークを含む幅広い分野で利用されている．近年，デジタル信号処理技術の発達に伴い，より高性能なD/A変換器やA/D変換器の需要が高まっている．しかし，電気的なD/A変換器やA/D変換器は，ジッタ制限，電磁干渉，RC遅延などの高速動作における固有のボトルネックを有している．よって，コストや複雑さを犠牲とし ...
岡田 拓也
core +1 more source
Advanced Functional Materials, EarlyView.Quantum sensing reveals intricate patterns linking endo‐lysosomal maturation to cardiac fibrosis progression, highlighting complexity in cellular remodeling. This study investigates fibroblast‐to‐myofibroblast transition under cell aging, stiffness, and TGF‐β stimulation, comparing nanodiamond uptake, endo‐lysosomal dynamics, and free radical ...
Aldona Mzyk +3 more
wiley +1 more source
A Modular AC-DC Power Converter with Zero Voltage Transition for Electric Vehicles
Energies, 2017 A study of the fundamental of operation of a three-phase AC-DC power converter that uses Zero-Voltage Transition (ZVT) together with Space Vector Pulse Width Modulation (SVPWM) is presented. The converter is basically an active rectifier divided into two
Jazmin Ramirez-Hernandez +2 more
doaj +1 more source
30-nm wavelength conversion at 10 Gbit/s by four-wave mixing in a semiconductor optical amplifier [PDF]
, 1998 Four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is currently the only available strictly transparent wavelength-conversion technique, which is not penalized by phase matching.
D'Ottavi, A. +6 more
core
Drug‐Free Thrombolysis Mediated by Physically Activated Micro/Nanoparticles
Advanced Functional Materials, EarlyView.Overview of particle‐mediated thrombolytic effects (thermal, mechanical, and chemical) and their activating physical stimuli (light, ultrasound, and magnetic field) in drug‐free thrombolysis. ABSTRACT Thrombus‐associated disorders rank among the world's leading causes of death, with ischemic heart disease and stroke as the main contributors.
Pierre Sarfati +2 more
wiley +1 more source
A Soft Switching Half-Bridge Doubler Boost Converter Operating with Unity Power Factor
Eletrônica de Potência, 2005 This paper proposes a half-bridge doubler boost converter associated with an active commutation cell in order to minimize commutation losses. The converter operates with unity power factor and is able to provide high output voltages.
Roberto Mendes Finzi Neto +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley +1 more source
Efficient Charge Transport in Zero‐Dimensional Perovskite for Ultrahigh‐Sensitivity X‐Ray Detection
Advanced Functional Materials, EarlyView.A novel mono‐octahedral 0D Bi‐based Dpy3Bi2I12 perovskite strengthens the internal hydrogen bonds and forms a quasi‐2D lattice, exhibits exceptional charge transport and mobility, achieving high X‐ray sensitivity and ultralow‐dose imaging, and setting a new benchmark for 0D detector performance.
Xin Song +16 more
wiley +1 more source
Thermal Analysis of Power Semiconductor Converters [PDF]
, 2011 Power devices may fail catastrophically if the junction temperature becomes high enough to cause thermal runaway and melting. A much lower functional limit is set by temperature increases that result in changes in device characteristics, such as forward breakover voltage or the recovery time, and failure to meet device specifications.
openaire +2 more sources