Results 71 to 80 of about 49,972 (308)

A Constant-Power Battery Charger with Inherent Soft Switching and Power Factor Correction [PDF]

open access: yes, 2003
A battery charging circuit, which operates as a constant power source, is proposed in this paper. By maintaining a constant output power throughout the charging process, the circuit reduces the size of thermal installation which would normally be ...
Pong, BMH, Poon, NK, Tse, CK
core   +4 more sources

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

Accurate Modeling and Efficiency Optimization of High Frequency BCM Mode Boost Converter Based on GaN Devices

open access: yesCSEE Journal of Power and Energy Systems
With further population of gallium nitride (GaN) devices, traditional boost topology has an opportunity to obtain a higher power density with a higher switching frequency.
Yifeng Wang   +3 more
doaj   +1 more source

New DC/DC High Step Up Isolated Converter with ZVS [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2014
In this paper we presents a soft switch sepic, flyback converter. At first the converter have hard switching in main switch and completely analysis then added auxiliary circuit for soft switching Auxiliary circuit in the converter is not only soft ...
Ehsan Movahedi   +2 more
doaj  

Application of a Novel ARCP Circuit in UPS

open access: yesJournal of Harbin University of Science and Technology, 2017
In order to reduce the loss of the power switching device and improve the efficiency of the UP system,the ARCP soft switching technology can be used.
MA Jun-jie   +3 more
doaj   +1 more source

Coexistence of Magnetic Orders in Two-Dimensional Magnet CrI3. [PDF]

open access: yes, 2019
The magnetic properties in two-dimensional van der Waals materials depend sensitively on structure. CrI3, as an example, has been recently demonstrated to exhibit distinct magnetic properties depending on the layer thickness and stacking order. Bulk CrI3
Balandin, Alexander   +14 more
core   +2 more sources

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

A novel zero-current soft-switching converter for switched reluctance motor drives [PDF]

open access: yes, 1998
A new zero-current-transition (ZCT) power converter for switched reluctance motor drive applications is presented. The proposed ZCT power converter possesses the definite advantages that both the main and auxiliary switches are operating with zero ...
Chan, CC, Chan, MSW, Chau, KT, Ching, TW
core   +1 more source

Substrate Stress Relaxation Regulates Cell‐Mediated Assembly of Extracellular Matrix

open access: yesAdvanced Functional Materials, EarlyView.
Silicone‐based viscoelastic substrates with tunable stress relaxation reveal how matrix mechanics regulates cellular mechanosensing and cell‐mediated matrix remodelling in the stiff regime. High stress relaxation promotes assembly of fibronectin fibril‐like structures, increased nuclear localization of YAP and formation of β1 integrin‐enriched ...
Jonah L. Voigt   +2 more
wiley   +1 more source

Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control [PDF]

open access: yes, 2014
Several papers have been published recently on TPS control of dual active bridge (DAB) converter, however, no complete study of the converter operation behaviour exists, that takes into account all switching modes in both charging and discharging ...
Aboushady, A.A.   +3 more
core   +3 more sources

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