Results 21 to 30 of about 280,821 (244)

A unified analysis of converters with resonant switches [PDF]

open access: yes, 1987
Quasi-resonant converters are a recently introduced family of single-switch resonant converters featuring zero-current or zero-voltage switching. Recognition of the topological structure uniting these converters — and the PWM converters on which they are
Freeland, Steve, Middlebrook, R. D.
core   +1 more source

Research and implementation of AC resistance calculation method for TSV array

open access: yesDianzi Jishu Yingyong, 2018
Through Silicon Via(TSV), as a key interconnection technology in 3D integrated circuits, is used to connect input and output of chips in different layers. When multiple TSVs with alternating current close to each other, will produce the proximity effect,
Zhao Jinglong, Miao Min
doaj   +1 more source

Calculation of the ac to dc resistance ratio of conductive nonmagnetic straight conductors by applying FEM simulations [PDF]

open access: yesEuropean Journal of Physics, 2015
This paper analyzes the skin and proximity effects in different conductive nonmagnetic straight conductors’ configurations subjected to applied alternating currents and voltages. These effects have important consequences, including a rise of the ac resistance, which in turn increases power loss, thus limiting the rating for the conductor.
openaire   +3 more sources

Analysis and design of a modular multilevel converter with trapezoidal modulation for medium and high voltage DC-DC transformers [PDF]

open access: yes, 2015
Conventional dual active bridge topologies provide galvanic isolation and soft-switching over a reasonable operating range without dedicated resonant circuits.
Adam, Grain P.   +4 more
core   +2 more sources

Human Blood Cell Sensing with Platinum Black Electroplated Impedance Sensor [PDF]

open access: yes, 2007
AC impedance sensing is an important method for biological cell analysis in flow cytometry. For micro impedance cell sensors, downsizing electrodes increases the double layer impedance of the metal-electrolyte interface, thus leaves no sensing zone in ...
Nandra, Mandheerej S.   +2 more
core   +1 more source

A Single-Stage LED Driver Based on ZCDS Class-E Current-Driven Rectifier as a PFC for Street-Lighting Applications [PDF]

open access: yes, 2018
This paper presents a light-emitting diode (LED) driver for street-lighting applications that uses a resonant rectifier as a power-factor corrector (PFC).
Chainarin Ekkaravarodome   +5 more
core   +2 more sources

Research on influencing factors and improving methods for DC distribution system stability

open access: yesThe Journal of Engineering, 2019
In this paper, the Nyquist admittance ratio criterion was used to analyse the influencing factors on the stability of the system, such as the parameters of DC line, the intensity of interconnected AC power grid, the droop coefficient and etc.
Xueshen Zhao   +5 more
doaj   +1 more source

Interlayer tunneling in counterflow experiments on the excitonic condensate in quantum Hall bilayers [PDF]

open access: yes, 2010
The effect of tunneling on the transport properties of} quantum Hall double layers in the regime of the excitonic condensate at total filling factor one is studied in counterflow experiments.
K. von Klitzing   +5 more
core   +1 more source

Grain-Boundary Resistance and Nonlinear Coefficient Correlation for SnO2-Based Varistors [PDF]

open access: yesMaterials Research, 2016
This work has focused on the electrical and microstructural properties of Nb2O5-doped SnO2-MnO2 ceramics. The pellets were prepared by solid-state reaction method according to the system (99.5-x) SnO2 - 0.5 MnO2 - x Nb2O5, on the following molar ratio x =
Mateus Gallucci Masteghin   +1 more
doaj   +1 more source

The Complex Impedance of the Hemispherical Ground Electrode: An Open Analytical Problem

open access: yesEnergies, 2023
The hemispherical ground electrode is a basic electrode whose analysis appears in many textbooks on electromagnetics in chapters dedicated to steady currents.
José Brandão Faria   +2 more
doaj   +1 more source

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