Results 111 to 120 of about 45,384 (315)

Power strategy in DC/DC converters to increase efficiency of electrical stimulators

European Journal of Translational Myology, 2016
Power efficiency is critical for electrical stimulators. Battery life of wearable stimulators and wireless power transmission in implanted systems are common limiting factors.
Pablo Aqueveque, Vicente Acuña, Francisco Saavedra, Adrien Debelle, Laurent Lonys, Nicolas Julémont, François Huberland, Carmen Godfraind, Antoine Nonclercq   +8 more
doaj   +1 more source

Impedance-Source DC-to-AC/DC Converter

, 2019
This article presents a novel impedance-source-based direct current (DC)-to-alternating current (AC)/DC converter (Z-Source DAD Converter). The Z-Source DAD converter converts the input DC voltage into AC or DC with buck or boost in the load voltage ...
Devaraj Elangovan, Rajendran Sivapriyan
core   +1 more source

Enhancement of Dielectric Breakdown Strength and Recoverable Energy Density in Three‐Dimensional Heterointerfaces on BaTiO3–PbZrO3–PbTiO3 Films via Room‐Temperature Nano‐Clustering

Advanced Functional Materials, EarlyView.
A room‐temperature aerosol deposition process yields multiphase nano‐clustered dielectric capacitors containing discrete BaTiO3, PbZrO3, and PbTiO3 crystals. This architecture creates three‐dimensional heterointerfaces that induce interfacial charge trapping and effectively inhibit breakdown propagation.
Hyunseok Song, Ke Xu, Donggeon Baek, Dayeong Hur, Minjae Kim, Hyun‐Cheol Song, Dae‐Yong Jeong, Houbing Huang, Jungho Ryu   +8 more
wiley   +1 more source

Advancing Tandem Organic Solar Cells With Ternary Acceptor Control for High‐Power Modules and Solar‐to‐Ammonia Conversion

Advanced Functional Materials, EarlyView.
Tandem organic solar cells with optimized ternary acceptor engineering achieved a power conversion efficiency of 15.53% and enabled a high‐voltage mini‐module (Voc 6.11 V). Integration into a bias‐free PV‐EC system further demonstrated efficient solar‐to‐ammonia (STA) conversion (97% Faradaic Efficiency, 4± 2% STA efficiency), highlighting scalable ...
Seyeong Song, Ahmad Tayyebi, Meysam Tayebi, Jungwoo Heo, Jiwoo Yeop, Dohun Yuk, Na Gyeong An, Jaewon Lee, Gi‐Hwan Kim, Maria del Carmen Gimenez Lopez, Ji‐Wook Jang, Jin Young Kim   +11 more
wiley   +1 more source

MVDC application:Switching processes AC-to-DC, DC-to-AC and imbalance mitigation through DC mode

, 2019
\u3cp\u3eProposal Flexible AC/DC-link (FDCL) testing is devoted to its ancillary services and to its interaction with the network. In the laboratory identify, tests are being performed with regards to the flexibility of the operation, and the level of ...
Overbeeke, F van, Castelo de Oliveira, T.E., Cuk, V., Jong, ECW Erik de, Castelo de Oliveira, Tiago, Cuk, V Vladimir, F. van Overbeeke, V. Cuk, van Overbeeke, F., T. E. Castelo de Oliveira, de Jong, E.C.W., E.C.W de Jong   +11 more
core   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

Advanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son, Changwoo Pyo, Sungmoon Park, Yoongi Cho, Seungchan Lee, Myungsoo Kim   +5 more
wiley   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source

Reduced Graphene Oxide Transparent Electrodes Enabling Compact Soft Tunable Lenses

Advanced Functional Materials, EarlyView.
By spray‐coating an elastomeric membrane with reduced graphene oxide (rGO) at various surface densities, elastomeric actuators are manufactured. Electro‐mechano‐optical characterizations show the suitability of rGO as an effective material for compliant, semi‐transparent electrodes, enabling soft electrically tunable lenses with a compact form factor ...
Giacomo Sasso, Alec Lamoreux, Nicola Pugno, James J. C. Busfield, Federico Carpi   +4 more
wiley   +1 more source

Single Stage DC-AC Boost Inverter-Based Perturbation Technique for Online Impedance Spectroscopy Measurements of Photovoltaic Panels

IEEE Open Journal of Power Electronics
Traditional online impedance spectroscopy measurements of solar PV cells are achieved through two-stage DC-DC-AC power conversion topologies where the input DC-DC boost converter stage is utilized for power regulation and injecting small signal AC ...
Awingot Akparibo, Paul Barendse
doaj   +1 more source

Impact of converter interface type on the protection requirements for DC aircraft power systems

, 2012
The utilization of converter interfaces has the potential to significantly alter the protection system design requirements in future aircraft platforms.
Burt, Graeme, Norman, Patrick, Galloway, Stuart, Fletcher, Steven   +3 more
core   +1 more source