Results 141 to 150 of about 31,027 (310)

Resonant and quasi-resonant converters [PDF]

open access: yes, 2009
Práce se zabývá návrhem a realizací kvazirezonančního měniče se spínáním v minimu napětí, který využívá rezonanci kondenzátoru a cívky. Je to jedna z možností jak zvýšit účinnost spínaného zdroje. Při použití rezonančních měničů se omezují ztráty tím, že
Krška, Vlastimil
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Regional changes in cerebral blood flow between the upright and supine posture and over 3 days of bed rest

open access: yesExperimental Physiology, EarlyView.
Abstract A reduction in cerebral blood flow (CBF) has been observed during spaceflight and bed rest. We aimed to examine the magnitude and regional heterogeneity of the decrease in CBF during bed rest compared to posture changes on Earth. Seventeen participants (age, 29 ± 9 years, 7 females) were studied in the upright and supine posture and over 3 ...
Carmen Possnig   +8 more
wiley   +1 more source

Design and optimization of three-phase LLC resonant DC/DC converter [PDF]

open access: yes
The purpose of this study is to discuss the design and optimization of three-phase LLC resonant DCDC converter. This study aims to optimize the three-phase LLC resonant DCDC converter.
Liu, Zikang
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High Efficiency LED Drivers: A Review [PDF]

open access: yes, 2016
Recently various soft switching techniques have been developed for various DC-DC based LED drivers. Typical driver circuits in the market have efficiency between 80% - 95% with majority having efficiency between 80% - 90%.
Phatangare, M. V. (Mrs)
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Inflammation, mechanical allodynia and an exaggerated exercise pressor reflex during disease progression in UCD‐type 2 diabetes mellitus rats

open access: yesExperimental Physiology, EarlyView.
Abstract Chronic low‐grade inflammation characterizes type 2 diabetes mellitus (T2DM) and underlies the development of peripheral neuropathy, symptoms of which include mechanical allodynia and an exaggerated exercise pressor reflex. The purpose of this study was to determine whether mechanical allodynia and/or specific concentrations of inflammatory ...
Michelle L. Harrison   +8 more
wiley   +1 more source

Development of a half-bridge LLC DC-DC loaded resonant converter for low power application / Mazliza Abdul Halim [PDF]

open access: yes, 2018
An LLC DC-DC loaded resonant converter is gaining more attention in power-supply designs due to its potential to achieve high efficiency and power density.
Abdul Halim, Mazliza
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LLC Resonant Converter Based for Steel Heating

open access: yesInternational Journal For Multidisciplinary Research
Inductor-capacitor resonant converter (LLC) has lately attracted the attention of researchers and engineers due to its blessings which includes low ZVS switching loss, excessive frequency operation functionality, and excessive electricity density in comparison to different current resonant converters.
Sanivarapu Mounika, V. Bramhaiah -
openaire   +1 more source

Intradiscal Cutibacterium acnes Sustains Modic Type 1‐Like Lesions Over Time in a Rat Lumbar Endplate Injury Model

open access: yesJOR SPINE, Volume 9, Issue 2, June 2026.
Intradiscal C. acnes injection sustained MC1‐like lesions with persistent neutrophil sustenance in an etiology‐specific lumbar MC rat model. This suggests that patients with bacterial MC etiology may persist in painful MC1, highlighting C. acnes and neutrophils as potential targets to promote MC1‐to‐MC2 conversion and improve pain and disability ...
Irina Heggli   +12 more
wiley   +1 more source

Efficiency‐Oriented Control of LLC Resonant Converter for Grid‐Connected Inverter

open access: yesIET Renewable Power Generation
This study proposes an efficiency‐oriented control approach for an LLC resonant converter‐based high‐frequency‐link grid‐connected inverter. The proposed topology has two stages.
Cagdas Hisar   +3 more
doaj   +1 more source

Status of the ILC Main Linac BPM R&D

open access: yes, 2009
An introduction and the status of R&D activities for a high-resolution, "cold" beam position monitor (BPM) and the related read-out electronics are discussed. Two different BPM detector concepts, to be attached to the SC quadrupole and located inside the
Lefevre, T.   +3 more
core  

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