Results 31 to 40 of about 1,146 (178)

A Digital Power Factor Controller for Primary-Side-Regulated LED Driver

IEEE Access, 2020
In this study, a digital primary-side controller for a flyback light-emitting diode driver with superior line regulation, high power factor (PF), and low total harmonic distortion (THD) was proposed.
Yi-Jing Lee, Chun-Ping Niou, Chun-Yu Chen, Chien-Hung Tsai   +3 more
doaj   +1 more source

Modeling, design and control of a modified flyback converter with ability of right-half-plane zero alleviation in continuous conduction mode

Engineering Science and Technology, an International Journal, 2022
For fuel cell applications, a module-integrated dc/dc converter with the isolation capability is an important part of a power distribution system. It increases the low input voltage of a fuel cell to a desire high voltage and behaves as an interface ...
Alireza Goudarzian, Adel Khosravi, Heidar Ali Raeisi   +2 more
doaj   +1 more source

Feasibility and SNR Performance of Hyperpolarized 129Xe Gas Exchange Imaging Using a Balanced SSFP Sequence

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a balanced SSFP (bSSFP) sequence for pulmonary 129Xe dissolved‐phase imaging based on a previously described double‐echo sequence facilitating separation into red blood cell and membrane signals, to test its feasibility and compare its SNR performance and imaging results to an analogous FLASH sequence.
Agilo L. Kern, Marcel Gutberlet, Jens M. Hohlfeld, Frank Wacker, Jens Vogel‐Claussen   +4 more
wiley   +1 more source

Double boost‐flyback converter [PDF]

IET Power Electronics, 2020
A high‐gain step‐up non‐isolated dc–dc converter is proposed in this study, named the double boost‐flyback converter. The topology combines two conventional boost‐flyback converters with input‐parallel and floating‐output connections. The new topology increases the static gain and reduces the input current ripple in relation to the conventional boost ...
Vanderlei Cardoso, Sergio Luis Brockveld Junior, Telles B. Lazzarin, Gierri Waltrich   +3 more
openaire   +1 more source

Longitudinal 1H and 129Xe Lung MRI in Patients With Post‐COVID Residual Lung Abnormalities

Journal of Magnetic Resonance Imaging, Volume 64, Issue 3, Page 669-682, September 2026.
ABSTRACT Background It is unclear how lung function may recover in patients with residual lung abnormalities (RLAs) following COVID‐19 pneumonia. Purpose To evaluate lung function trends over time in patients with RLAs following hospitalization due to COVID‐19. Study Type Prospective, multicenter longitudinal cohort study.
Laura C. Saunders, Guilhem J. Collier, Laurie J. Smith, Ho‐Fung Chan, Paul J. C. Hughes, Scarlett Strickland, Lotta Gustafsson, Thomas Newman, Megan Plowright, Zoë Gabriel, Lily M. Pearce, James T. Grist, Kher Lik Ng, Arthur Harrison, Charlotte E. Bolton, Jody Bray, Helen Marshall, Graham Norquay, Alberto M. Biancardi, Jimmy E. Ball, Neil J. Stewart, Kevin M. Johnson, Andrew J. Swift, Smitha Rajaram, John Blaikley, Stefan Stanel, Paul J. Collini, Gary H. Mills, Rod Lawson, Jonathan Brooke, Amanda T. Goodwin, Iain D. Stewart, Ling‐Pei Ho, Joseph Jacob, Thomas Meersmann, Galina E. Pavlovskaya, Fergus Gleeson, Ian P. Hall, Gisli Jenkins, Jim M. Wild, A. A. Roger Thompson, on behalf of the UK‐ILD consortium   +41 more
wiley   +1 more source

Design of a high power and high integration intelligent power drive module

Dianzi Jishu Yingyong
In response to the driving requirements of high-power brushless DC motor, a design of an intelligent power drive module using thick film hybrid integrated process is proposed.
Wu Hao, Li Caixia, Zhang Xiaofeng
doaj   +1 more source

A Module‐Level Photovoltaic Optimizer for Online I–V Curve Tracing and Daylight Photoluminescence

Advanced Sustainable Systems, Volume 10, Issue 8, August 2026.
This article presents a module‐level photovoltaic optimizer based on a synchronous buck converter. The system enables non‐invasive online I–V curve tracing and daylight photoluminescence imaging. By integrating advanced diagnostic capabilities with minimal hardware modifications, this compact solution offers cost‐effective, continuous inspection ...
Alberto Redondo‐Plaza, Amy Zulema Velasco‐Bonilla, José Ignacio Morales‐Aragones, Leonardo Cardinale‐Villalobos, Víctor Alonso‐Gómez, Luis Hernández‐Callejo   +5 more
wiley   +1 more source

A Universal Approach to Enhancing Silicon Hot‐Carrier Photodetectors for CMOS‐Compatible SWIR Imaging

Advanced Science, Volume 13, Issue 38, 9 July 2026.
Silicon hot‐carrier photodetectors offer a CMOS‐compatible pathway for SWIR detection but suffer from intrinsically low quantum efficiency. Here, we introduce a quasi‐generalized antireflection coating (QARC) that universally enhances optical absorption and quantum efficiency, enabling the first CMOS‐compatible SWIR imaging with silicon hot‐carrier ...
Eui‐Hyoun Ryu, Hyun Woo Ko, Sunghyun Hwang, Nayeon Kim, Ji‐Hwan Son, Sunghyun Han, Paul Hongsuck Seo, Jisoo Hong, Sang‐Jun Kim, Seon Kyu Yoon, Min‐Chul Park, In‐Ho Lee   +11 more
wiley   +1 more source

Compensated Single Input Multiple Output Flyback Converter

Energies, 2021
A new single-input multiple-output (SIMO) converter is proposed in this work by incorporating flyback and buck converters in a master–slave configuration.
Mohammad Tahan, David O. Bamgboje, Tingshu Hu   +2 more
doaj   +1 more source

Echo‐Planar‐Based Time‐of‐Flight Imaging Using a Modified Interleaved Flyback Trajectory

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3131-3144, June 2026.
ABSTRACT Purpose A modified interleaved flyback (miFB) approach is introduced, designed to mitigate flow artifacts caused by alternating readout polarities in Echo Planar Imaging (EPI), while preserving acquisition efficiency. Methods We propose reconstructing odd and even echoes of 3D‐EPI separately.
Simon Blömer, Tony Stöcker, Rüdiger Stirnberg   +2 more
wiley   +1 more source