Results 91 to 100 of about 1,710,161 (298)

Optical pulse width modulation for electrically isolated analogue transmission

, 1985
Optical pulse width modulation has been used to produce two high-frequency electrically isolated analogue data links offering low noise and distortion at modest ...
Ghassemlooy, Zabih, Wilson, Brett, B Wilson, Z Ghassemlooy   +3 more
core   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

Direct power control in pulse-width modulation rectifier based on virtual flux estimation

Advances in Mechanical Engineering, 2017
Pulse-width modulation rectifier plays an important role in the field of electric energy conversion. It has many advantages such as the grid side current sinusoidal, bidirectional energy flow, and unit power factor.
Bo Fan, Xian-Bo Wang, Zhi-Xin Yang, Lu Song, Shu-Zhong Song   +4 more
doaj   +1 more source

Economic Control of Solar Photo-Voltaic Generation System using Efficient Scheme of Novel One Cycle Modulator for Direct Current Supply [PDF]

Renewable Energy Research and Applications
This paper considers the context of renewable energy generation for a photo voltaic solar generating system with a non-linear load using one cycle controller with a motor across terminals.
Mohammed Zaid Khan, Seema Agrawal
doaj   +1 more source

Suppression of high-frequency perturbations in pulse-width modulation [PDF]

, 2008
A method suppresses high-frequency perturbations in a pulse-width modulated signal. The pulse-width modulation may superpose a carrier signal onto an input signal having a predetermined modulation frequency. The carrier signals may be phase-shifted.
Knott, Arnold
core  

3D‐Printed Gradient Shape‐Memory Strain Sensors With Rewritable Gauge Factors

Advanced Functional Materials, EarlyView.
A 3D‐printed shape‐memory strain sensor combines thermomechanical programming with gradient architectural design. Preset strain rewrites the gauge factor (GF), while the gradient geometry amplifies the response through strain redistribution. Reprogrammable sensitivity enables the same sensor to detect weak pulse signals and monitor large‐amplitude ...
Xuan Zhang, Wenjie Qiao, Kaixin Jiang, Sherry Chen, Hanyu Cui, Kirsten Dyer, Xuefeng Zhu, Ting Wang, Xuehua Zhang, Ben Bin Xu, Jie Kong   +10 more
wiley   +1 more source

Performance Analysis of Modulation Strategies in Single-Phase HBNPC Inverter Across Variable Operating Conditions

IEEE Access
This study investigates the performance of a single-phase 5-level H-Bridge Neutral Point Clamped (HBNPC) inverter across various operating conditions.
Nazlican Cavli, Emre Ozkop
doaj   +1 more source

An Approach to Improve Energy Efficiency during Antimicrobial Blue Light Inactivation: Application of Pulse-Width Modulation Dimming to Balance Irradiance and Irradiation Time. [PDF]

Antibiotics (Basel), 2023
Zhang W, Su P, Ma J, Tan Y, Gong M, Ma L.   +5 more
europepmc   +1 more source

Digital Pulse Width Modulation Controlled DC-DC Buck Converter using VHDL Coding [PDF]

, 2017
This paper presents the control of the DC-DC Buck converter using Digital Pulse Width Modulation (DPWM) methods in MATLAB-SIMULINK using XILINX TOOL. The conventional PWM is compared with the Digital Pulse Width Modulation.
Prathap, Joseph Anthony, Anandhi, T. S.
core  

Guanosine‐Quadruplex Hydrogels as Dynamic, Mechanically Tunable and Ion Conductive 3D Scaffolds for Cell Culture Applications

Advanced Functional Materials, EarlyView.
Versatile guanosine‐quadruplex (GQ) hydrogels are developed as dynamic biomatrices for cell culture. These scaffolds are fabricated under mild aqueous conditions, present improved stability, tunable mechanical properties within physiological ranges; fibrillar, porous microstructure, ion conductivity, and cytocompatibility.
Neha Thakur, Minye Jin, Pavel Milkin, Deepa Negi, Carla Cofiño Fabres, Hubert Gojzewski, Leonid Ionov, Alla Synytska, Andries van der Meer, Robert Passier, Julieta I. Paez   +10 more
wiley   +1 more source