Results 21 to 30 of about 17,487,011 (352)

Active Current Sharing of a Parallel DC-DC Converters System Using Bat Algorithm Optimized Two-DOF PID Control

open access: yesIEEE Access, 2019
This paper presents a current sharing method to actively balance the output currents of a parallel dc–dc converters’ (PDCC) system regarding the demanded power.
Syuan-Yi Chen   +4 more
semanticscholar   +1 more source

Current methods active learning of postgraduate students

open access: yesJournal of Education, Health and Sport, 2017
In the article the experience ofOdessaNationalMedicalUniversityon providing practical training at postgraduate level study. Defined organizational and methodological aspects of the given type of training are implemented complex measures to improve its ...
O. P. Rogachevskiy   +4 more
doaj   +3 more sources

Programmable Current-Mode Universal Active Filters Employing Current Conveyors

open access: yesActive and Passive Electronic Components, 1998
Novel current-mode active filter circuits using current-conveyors are presented. The proposed circuits can realize all standard second-order filter functions.
Muhammad Taher Abuelma'atti
doaj   +1 more source

Frequency-domain Analysis Of Resonant Current Controllers For Active Power Filters

open access: yesEletrônica de Potência, 2010
This paper performs a frequency-domain analysis of three different resonant current controllers for active power filters. Respect to previous papers, the novelty consists of a stability analysis of the closed loop system using the Nyquist criterion.
Leonardo Rodrigues Limongi   +3 more
doaj   +1 more source

Seismology of active regions: Current status and perspectives

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The goal of helioseismology is to provide accurate information about the Sun’s interior from the observations of the wave field at its surface. In the last three decades, both global and local helioseismology studies have made significant advances and ...
Sushanta Tripathy
doaj   +1 more source

Explorations of electric-current system in solar active regions .1. Empirical inferences of the current flows [PDF]

open access: yes, 1987
In this paper we explore techniques to identify sources of electric current systems and their channels of flow in solar active regions. Measured photospheric vector magnetic fields (VMF) together with high-resolution white-light and H filtergrams provide
Ding YJ   +5 more
core   +1 more source

Versatile Active Biquad Based on Dual-Output Second-Generation Current Conveyors

open access: yesActive and Passive Electronic Components, 1998
A universal active biquad based on the dual-output second-generation current-conveyor (CCII±) is presented. The circuit uses only six CCII± and can, simultaneously, support three mixed-mode transfer functions and five current-mode transfer functions ...
M. T. Abuelma'atti, H. A. Alzaher
doaj   +1 more source

Exploring order in active turbulence: Geometric rule and pairing order transition in confined bacterial vortices

open access: yesBiophysics and Physicobiology, 2022
Ordered collective motion emerges in a group of autonomously motile elements (known as active matter) as their density increases. Microswimmers, such as swimming bacteria, have been extensively studied in physics and biology.
Kazusa Beppu, Yusuke T. Maeda
doaj   +1 more source

New trends in active filters for improving power quality [PDF]

open access: yes, 1996
Since their basic compensation principles were proposed around 1970, active filters have been studied by many researchers and engineers aiming to put them into practical applications.
H. Akagi, Akagi, Hirofumi
core   +1 more source

Universal Current-Conveyor-Based Current-Mode Filters with Single Input and Three Outputs

open access: yesActive and Passive Electronic Components, 1998
Universal active current-mode filters with single input and three outputs are presented. The proposed filters avoid the use of external feedback in any part of the circuit and use grounded resistors and grounded capacitors.
Muhammad Taher Abuelma'atti   +1 more
doaj   +1 more source

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