Results 71 to 80 of about 40,998 (271)

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

A second-order PWM-in/PWM-out class-D audio amplifier

IMA Journal of Applied Mathematics, 2011
Class-D audio amplifiers convert an audio signal into a high-frequency square wave whose switching times are modulated according to that audio signal. Thus, they operate using so-called pulse-width modulation. When the high-frequency components of the output square wave are removed by filtering, the remaining lower frequency components can reproduce ...
Cox, Stephen Michael, Lam, Chun Kit, Tan, Meng Tong   +2 more
openaire   +3 more sources

High Step-Down Isolated PWM DC–DC Converter Based on Combining a Forward Converter With the Series-Capacitor Structure [PDF]

, 2023
Juan Rodríguez, Juan R. García-Meré, Diego G. Lamar, M.M. Hernando, J. Sebastián   +4 more
openalex   +1 more source

Integrated Optoelectronic Model to Predict the External Quantum Efficiency of Single‐Layer TADF Organic Light‐Emitting Diodes

Advanced Electronic Materials, EarlyView.
An experimentally validated optoelectronic device model is presented to describe the efficiency and roll‐off behavior of single‐layer TADF OLEDs. By coupling charge transport, exciton dynamics, and optical outcoupling, the model reproduces the External Quantum Efficiency (EQE) across different emission layer thicknesses and temperatures, offering ...
Jawid Nikan, Kaiwen Guo, Yungui Li, Paul W. M. Blom, Gert‐Jan A. H. Wetzelaer   +4 more
wiley   +1 more source

Parallelogram Based Method for Space Vector Pulse Width Modulation

Revista Facultad de Ingeniería Universidad de Antioquia, 2010
Este artículo presenta un método para la determinación del ciclo de trabajo de la modulación de vectores espaciales utilizando circuitos convencionales de modulación por ancho de pulso.
José Restrepo, Víctor Guzmán, María Giménez, Alexander Bueno, José Aller   +4 more
doaj  

ESTIMATION OF LOSSES IN THE MULTI-PHASE FREQUENCY CONVERTERS FOR ELECTRIC GROUND TRACTION SYSTEM OF AIRCRAFT

Известия высших учебных заведений: Проблемы энергетики, 2017
Improving the energy efficiency of vehicles is an essential feature of scientific and technical progress. One means of increasing the energy efficiency of transport is the introduction of electric drive with multiphase induction motors.
A. G. Logacheva, R. R. Khusnutdinov, I. O. Aymetov   +2 more
doaj   +1 more source

A Novel Methodology to Enhance the Smooth Running of the PM BLDC Motor Drive Using PWM-PWM Logic and Advance Angle Method [PDF]

, 2022
Balamurali Surakasi, Raavi Satish, Balamurali Pydi, Hossam Kotb, Mokhtar Shouran, Bdereddin Abdul Samad   +5 more
openalex   +1 more source

Experimental validation of the RESPONSE framework against cyberattacks on cyber‐physical process systems

AIChE Journal, EarlyView.
Abstract This work experimentally validates the RESPONSE (Resilient Process cONtrol SystEm) framework as a solution for maintaining safe, continuous operation of cyber‐physical process systems under cyberattacks. RESPONSE implements a dual‐loop architecture that runs a networked online controller in parallel with a hard‐isolated offline controller ...
Luyang Liu, Pu Du, Zaman Sajid, Benjamin Wilhite, Costas Kravaris, Faisal Khan   +5 more
wiley   +1 more source

Overview of the digital-to-analog converter module based on the MCP4725 chip and the digital-to-analog converter module based on the integrating RC circuit

Известия Томского политехнического университета: Промышленная кибернетика
In technical cybernetic systems, it is impossible to do without exchanging information between devices. Most modern control devices are digital, but it is not uncommon for an analog signal to be required to control executive devices, which can be changed
Kirill A. Volobuev, Igor V. Trubin, Vitaly G. Trubin   +2 more
doaj   +1 more source

A New Symmetrical Cascaded Single Phase H Bridge Inverter With Reduced Switch Count [PDF]

E3S Web of Conferences
An imaginative multilevel inverter topology is presented with the intent of deploy few series connected switches, ameliorate modularity and derogatory voltage stress collate to unremarkable topologies which is published in literature [1] and [2].
Kumar Dinesh, Kumar Pandey Vijay, Nachappa M.N., Goswami Sachin   +3 more
doaj   +1 more source