Results 81 to 90 of about 658,855 (214)

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

IEEE Open Journal of the Solid-State Circuits Society
With the surging demands for higher current at sub-1-V supply level in high-performance digital systems, high-efficiency and high-current-density power converters are essential for system integration.
Yan Lu, Junwei Huang, Zhiguo Tong, Tingxu Hu, Wen-Liang Zeng, Mo Huang, Xiangyu Mao, Guigang Cai   +7 more
doaj   +1 more source

Acute prefrontal hemodynamic responses to intermittent theta burst stimulation correlate with current depression and episode recurrence: A cross‐sectional study

Psychiatry and Clinical Neurosciences, Volume 80, Issue 7, Page 616-625, July 2026.
Background Mounting evidence has indicated that multiple major depressive disorder (MDD) episodes are correlated with brain morphometric changes that confer an increased recurrence risk. Functional abnormalities underlying this recurrent vulnerability remain underexplored.
Minxia Jin, Adam W.L. Xia, Wanda M.W. Chau, Nancy M.X.Y. Shi, Penny P. Qin, Bella B.B. Zhang, Rebecca L.D. Kan, Alvin H.P. Tang, Tim T.Z. Lin, Sharie X. Wang, Dicky W.S. Chung, Frank Padberg, Georg S. Kranz   +12 more
wiley   +1 more source

Competition and Collaboration in the AI Race: Country‐Level Directional Evidence for Risk Monitoring and Policy

Risk Analysis, Volume 46, Issue 7, July 2026.
ABSTRACT Artificial intelligence (AI) is reshaping national economies, yet country‐level AI–macro relationships remain poorly understood. Using annual data for the United States and China, 1980–2020, we develop a four‐layer triangulation framework—Pattern Causality, Granger causality, VECM‐based cointegration, and lead–lag correlation—to map ...
Pengyu Liu, Stavros K. Stavroglou, Saurabh Mishra, Epameinondas Katsikas, Athanasios A. Pantelous, Bilal M. Ayyub, James H. Lambert   +6 more
wiley   +1 more source

A relative Poincaré–Birkhoff theorem

Bulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.
Abstract A. Moreno and Otto van Koert proved a generalised version of the classical Poincaré–Birkhoff theorem, for Liouville domains of any dimension. In this article, we prove a relative version for Lagrangians with Legendrian boundary. This gives interior chords of arbitrary large length, provided that the twist condition introduced by Moreno and van
Agustin Moreno, Arthur Limoge
wiley   +1 more source

A Novel Step‐Up Converter With Lower Ripple and RHP Zero Elimination

IET Power Electronics
The paper presents a novel step‐up converter featuring ultralow output ripple and elimination of right‐half‐plane (RHP) zeros, making it suitable for high‐precision and high‐reliability boost applications.
Siwen Ye, Jiawei Zhu, Mingou Wei, Xijun Yang   +3 more
doaj   +1 more source

Deriving The Canonical Equivalent Circuit For Small Signal & Low Frequency Ac Model For The Sepic And Zeta PWM Dc-dc Converters With Two-port Network

Eletrônica de Potência, 2011
PWM dc-dc converters operating in Continuous Conduction Mode (CCM) perform similar basic functions despite the topology of which one. The canonical equivalent circuit of small signal & low frequency ac model permits to analyze converter behavior in a ...
Enio V. Kassick
doaj   +1 more source

Integrated Square On-Chip Inductor for Photovoltaic Converter Applications

Revue des Énergies Renouvelables
The research of this paper concerns the study of an integrated square on-chip inductor in a DC-DC Buck converter connected to a photovoltaic module.
mokhtaria derkaoui, Yamina Benhadda
doaj   +1 more source

Realization of a Photovoltaic Fed Sparse Alternating Current (AC)-Link Inverter

The Journal of Engineering Research, 2016
In this paper, a soft-switched alternating current (AC)-link buck-boost inverter with a reduced number of switches, referred to as a sparse AC-link buck-boost inverter, was designed and implemented for a photovoltaic (PV) interface. Important features of
R. Ramaprabha, G. Ramya, U. Ashwini, A.H. Fathima Humaira   +3 more
doaj   +1 more source

Interleaved buck converter using a floating dual series-capacitor topology

International Journal of Power Electronics and Drive Systems (IJPEDS)
Interleaved buck converters (IBC) are widely utilized in step-down voltage applications due to their excellent performance and straightforward design. However, conventional IBCs require individual current sensors and feedback control circuits to maintain phase current balance, resulting in increased cost and design complexity.
Chan Viet Nguyen, Dang Tai Nguyen, Thanh Phuong Ho   +2 more
openaire   +1 more source

Alternative topologies for the low-voltage buck converter

, 2018
In this thesis, investigative work on and development of alternative topologies for the buck converter for low voltage dc dc conversion was performed. The three level buck, Resonant Switch Capacitor (ResSC), and Cuk-Buck2 were selected to be studied further based on the fact that they contain few components and were discovered in this work to have the ...
openaire   +1 more source