Results 71 to 80 of about 5,431,466 (351)

Investigation of the Coupling Paths of a Galvanically Isolated AC/AC Converter [PDF]

, 2007
A galvanically isolated three-phase AC/AC converter with a high-frequency AC-link has been analyzed from an EMC point of view. This is a special configuration because of a large number of switches, a high frequency transformer, and a fourwire output. The
Ferreira, Braham, Leferink, Frank, Polinder, Henk, Roc'h, Anne, Zhao, Dongsheng   +4 more
core   +2 more sources

Constant-frequency clamped-mode resonant converters [PDF]

IEEE Transactions on Power Electronics, 1987
Two clamped-mode resonant converters are proposed which operate at a constant frequency while retaining the desired features of conventional series- and parallel-resonant converters. State-plane analyses are performed which identify all possible circuit-operating modes of a clamped-mode series-resonant converter and define their mode boundaries.
Fu-Sheng Tsai, Peter Materu, Fred C. Lee
openaire   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Key Technologies of Explosion-proof Frequency Converter Applied in Coal Mine

Gong-kuang zidonghua, 2012
The paper analyzed problems of voltage level, heat dissipation, EMC and conversion efficiency of inverter existed in using process of explosion-proof frequency converter in coal mine underground, and introduced methods of solving these problems in ...
ZHU Long-ji, ZHANG Xu-li
doaj  

Transient analysis of human electric shock current in frequency converter IT system based on Laplace transform

矿业科学学报
In order to solve the difficulty in calculating the RMS value of human electlic shcck current caused by pulse modulated wave in case of electrocution accident in low voltage frequency converter IT power supply system of open-pit coal mine fire fighting ...
YUAN Guangzhong, LIU Haisheng, YANG Zhijia, SUN Baojin, ZHANG Wei   +4 more
doaj   +1 more source

Design of an LCC current-output resonant converter for use as a constant current source [PDF]

, 2007
A methodology for the design of LCC resonant current-source converters, is presented. Unlike previous techniques, the resulting converter provides near constant steady-state output current over an extended load range when excited at the resonant ...
Bingham, Chris, Foster, M. P., Gilbert, A .J., Stone, D. A.   +3 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Comparative aspects in control strategies for hybrid DC-DC converters [PDF]

, 2016
Linear-switching hybrid DC/DC converters consist of a voltage linear regulator (classic NPN or nMOS topologies and LDO) connected in parallel with a switching DC/DC converter.
Cosp Vilella, Jordi, Martínez García, Herminio   +1 more
core   +3 more sources

Very-High-Frequency Resonant Boost Converters [PDF]

IEEE Transactions on Power Electronics, 2007
This paper presents a resonant boost topology suitable for very-high-frequency (VHF, 30-300 MHz) DC-DC power conversion. The proposed design features low device voltage stress, high efficiency over a wide load range, and excellent transient performance. Two experimental prototypes have been built and evaluated.
Perreault, David J., Pilawa-Podgurski, Robert C. N., Rivas, Juan M., Sagneri, Anthony D., Anderson, David I.   +4 more
openaire   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source