Results 81 to 90 of about 78,351 (202)

Gain- and Loss-Induced Topological Insulating Phase in a Non-Hermitian Electrical Circuit

open access: yesPhysical Review Applied, 2020
There have been considerable efforts devoted to the study of topological phases in certain non-Hermitian systems that possess real eigenfrequencies in the presence of gain and loss. However, it is challenging to experimentally realize such non-Hermitian topological insulators in either quantum or photonic systems, due to the difficulties in introducing
Liu, Shuo   +7 more
openaire   +2 more sources

Object-topological modeling of electrical networks

open access: yesВестник Северо-Кавказского федерального университета
. Introduction. The Common Information Model (CIM) is the conceptual basis for modeling electrical networks and automating their management. It allows building object-oriented models of electrical networks, but does not provide efficient tools for ...
I. A. Golovinskii
doaj   +1 more source

Comparing the Topological and Electrical Structure of the North American Electric Power Infrastructure

open access: yes, 2011
The topological (graph) structure of complex networks often provides valuable information about the performance and vulnerability of the network. However, there are multiple ways to represent a given network as a graph.
Barrows, Clayton   +3 more
core   +1 more source

Broadband equivalent circuit derivation for multi-port circuits based on eigen-state formulation [PDF]

open access: yes, 2009
In this paper a passive guaranteed wide-band equivalent circuit derivation methodology, attempting to bridge physical geometry considerations with equivalent circuits model extractions, is proposed.
Bajon, Damienne, Wane, Sidina
core   +1 more source

Synthesis of Silicon Nano-fibrous (SiNf) thin film with controlled thickness and electrical resistivity

open access: yesResults in Physics, 2019
Considering abundance of silicon on earth with its known acceptance in semiconductor industries and increasing applications of nano porous thin films in various sensors, electrical circuits, new generation batteries, and capacitors, it is essential to ...
Chirag Paladiya, Amirkianoosh Kiani
doaj   +1 more source

Voltage Stabilization in Microgrids via Quadratic Droop Control [PDF]

open access: yes, 2009
We consider the problem of voltage stability and reactive power balancing in islanded small-scale electrical networks outfitted with DC/AC inverters ("microgrids").
Simpson-Porco, John W.   +2 more
core   +1 more source

A Noise-Shifting Differential Colpitts VCO [PDF]

open access: yes, 2002
A novel noise-shifting differential Colpitts VCO is presented. It uses current switching to lower phase noise by cyclostationary noise alignment and improve the start-up condition.
Aparicio, Roberto, Hajimiri, Ali
core  

CMOS OTA-C high-frequency sinusoidal oscillators [PDF]

open access: yes, 1991
Several topology families are given to implement practical CMOS sinusoidal oscillators by using operational transconductance amplifier-capacitor (OTA-C) techniques. Design techniques are proposed taking into account the CMOS OTA's dominant nonidealities.
Huertas Díaz, José Luis   +3 more
core   +1 more source

Study of the Influence of the Voltage Regulator Integrated Circuit Topology on its Radiation Hardness

open access: yesПриборы и методы измерений
Method of recording responses to radiation exposure is considered using the X-ray complex RIK-0401 and it is shown that for linear voltage regulators integrated circuits it allows diagnosing presence of changes in their topology. Four types of integrated
Е. A. Кulchenkov   +2 more
doaj   +1 more source

A Multifunctional Isolated and Non-Isolated Dual Mode Converter for Renewable Energy Conversion Applications

open access: yesEnergies, 2017
In this paper, a multifunctional isolated and non-isolated dual-mode low-power converter was designed for renewable energy conversion applications such as photovoltaic power generation to achieve different operating modes under bi-directional electrical ...
Yiwang Wang   +5 more
doaj   +1 more source

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