Results 51 to 60 of about 1,453,812 (287)

Efficiency Analysis of Multiple-Transmitter Wireless Power Transfer Systems

open access: yesInternational Journal of Antennas and Propagation, 2018
The range of the power transmission region can be effectively enlarged by a multiple-transmitter (TXs) and single-receiver (RX) magnetic wireless power transfer (WPT) system. However, the power transfer efficiency (PTE) of the WPT system with two TXs and
Jin Zhang, Fangfang Wang
doaj   +1 more source

Research on frequency stability of magnetic coupling wireless power transfer system

open access: yesGong-kuang zidonghua, 2021
The natural oscillation frequency of the magnetic coupling wireless power transfer system is easily affected by circuit parameters and frequency bifurcation phenomenon often occurs.
ZHANG Lian   +4 more
doaj   +1 more source

Optimal refrigerator

open access: yes, 2010
We study a refrigerator model which consists of two $n$-level systems interacting via a pulsed external field. Each system couples to its own thermal bath at temperatures $T_h$ and $T_c$, respectively ($\theta\equiv T_c ...
A. W. Marshall   +11 more
core   +1 more source

Optimization of Power Transfer Efficiency and Energy Efficiency for Wireless-Powered Systems With Massive MIMO [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2018
published
Talha Ahmed Khan   +2 more
openaire   +2 more sources

Automotive Battery Charging based on Efficient Capacitive Power Transfer

open access: yes2023 International Conference on Clean Electrical Power (ICCEP), 2023
Isolated power converters find application in different fields of electric mobility, such as battery charging, where galvanic insulation between on-board storage system and electrical grid is required. Conventional isolated systems are based on the use of transformers, which have the drawback to be bulky and expensive.
Pellitteri F.   +4 more
openaire   +3 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Theory Based on Device Current Clipping to Explain and Predict Performance Including Distortion of Power Amplifiers for Wireless Communication Systems [PDF]

open access: yes, 2008
Power amplifiers are critical components in wireless communication systems that need to have high efficiency, in order to conserve battery life and minimise heat generation, and at the same time low distortion, in order to prevent increase of bit ...
Tian, Yunjia, Tian, Yunjia
core   +1 more source

Maximum Energy Efficiency Tracking for Wireless Power Transfer Systems [PDF]

open access: yesIEEE Transactions on Power Electronics, 2015
A method for automatic “maximum energy efficiency tracking” operation for wireless power transfer (WPT) systems is presented in this paper. Using the switched-mode converter in the receiver module to emulate the optimal load value, the proposed method follows the maximum energy efficiency operating points of a WPT system by searching for the minimum ...
Zhong, WX, Hui, SYR
openaire   +5 more sources

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

open access: yesFEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman   +2 more
wiley   +1 more source

Selection of Ferrite Depending on Permeability and Weight to Enhance Power Transfer Efficiency in Low-Power Wireless Power Transfer Systems

open access: yesEnergies
With advancements in the field of electrical engineering, various low-power portable electronic devices have been commercialized. To eliminate and unify different types of cables, inductive wireless power transfer (WPT) technology, which uses magnetic ...
Jaewon Rhee   +3 more
doaj   +1 more source

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