Results 101 to 110 of about 509,630 (301)

Design of wireless charging device for mine-used portable gas detector

Gong-kuang zidonghua, 2015
In view of problem of mine-used portable gas detector using battery for power supply that battery has limited capacity, and bad contacts can affect battery charging effects, design scheme of wireless charging device for mine-used portable gas detector ...
ZHANG Xinchao, WU Yincheng, HUANG Shaoji
doaj   +1 more source

Solar Power Satellite Microwave Power Transmission System Description Executive Summary [PDF]

The history of the concept of microwave power beaming to Earth is reviewed with emphasis on transmission frequency selection. Constraints on the system power level results from (1) required rejection of waste heat resulting from inefficiencies in the ...
Woodcock, G. R.
core   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

An Optimized Coordination Strategy between Line Main Protection and Hybrid DC Breakers for VSC-Based DC Grids Using Overhead Transmission Lines

Energies, 2019
Compared with alternating current (AC) power grids, the voltage-sourced converter (VSC)-based direct current (DC) grid is a system characterized by “low damping„, as a result, once there is a short-circuit fault on the DC transmission line ...
Xiangyu Zheng, Rong Jia, Linling Gong, Guangru Zhang, Xiangyu Pei   +4 more
doaj   +1 more source

Legislative History of the Fair Labor Standards Act [PDF]

, 1939
With recent advances in power electronic technology, High-Voltage Direct Current (HVDC) transmission system has become an alternative for transmitting power especially over long distances.
Forsythe, John S.
core   +1 more source

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source

Active Capacitor Voltage Balancing Strategy for Stacked Flying Capacitor Half‐Bridge Five‐Level LLC Resonant Converter

IET Power Electronics
A multilevel DC–DC converter is a promising solution to save cost and promote the power density of DC solid‐state transformers. Among the multilevel DC–DC topologies, the stacked flying capacitor half‐bridge five‐level LLC resonant converter can ...
Daoxin Tong, Fan Zhang, Xu Yang, Jiajing Li, Yukun Niu, Wenjie Chen   +5 more
doaj   +1 more source

Investigation of Partial Discharge in Solid Dielectric under DC Voltage

, 2014
A partial discharge, or PD, is defined as an electrical discharge that is localized within only a part of the insulation between two separated conductors. Recent research on PD mainly focuses on the study of PD characteristics under AC voltage.
Chen, G, He, M, Lewin, P L, Tian, J
core  

Effect of equivalent salt deposit density on flashover voltage of contaminated insulator energized by HVDC [PDF]

, 2000
In Malaysia, the demand for electric power is increasing day by day due to more consumption of power in the industrial sector. Recently, the high voltage DC transmission lines are under construction near the coastal environments for transmitting the ...
Ahmad, H., Budin, R., Buntat, Z., Piah, M. A. M., Saadom, Z., Salam, M. A., Tamsir, T.   +6 more
core  

Halide‐Dependent Photoluminescence and Heavy‐Atom Effects in Low‐Melting Organic–Inorganic Manganese Halides

Advanced Functional Materials, EarlyView.
Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya, Christian Balischewski, Jiyong Kim, Tiago Duarte, Lianshe Fu, Rute A.S. Ferreira, Alkit Beqiraj, Iuliia Mikulska, Diego Gianolio, Eric Sperlich, Felix Stete, Wouter Koopman, Christina Günter, Katlen Brennenstuhl, Daniel Van Opdenbosch, Cordt Zollfrank, Armin Wedel, Beth J. Murray, Małgorzata Swadźba‐Kwaśny, Tillmann Klamroth, Michael U. Kumke, Verónica de Zea Bermudez, Andreas Taubert   +22 more
wiley   +1 more source