Results 21 to 30 of about 5,292 (193)

Pulsed technology for manual arc welding of thin-walled structures by coated electrode [PDF]

open access: yesОмский научный вестник, 2019
The article presents the results of work on the study of the use of a single-phase rectifier with an additional unit for obtaining pulsed modes for manual arc welding with thin-walled construction by a stick electrode.
V. F. Mukhin   +2 more
doaj   +1 more source

Mathematical Modeling of Linear Fractional Oscillators

open access: yesMathematics, 2020
In this work, based on Newton’s second law, taking into account heredity, an equation is derived for a linear hereditary oscillator (LHO). Then, by choosing a power-law memory function, the transition to a model equation with Gerasimov–Caputo fractional ...
Roman Parovik
doaj   +1 more source

The RC Network Analyzer Using the High Permittivity Ceramics and its Applications [PDF]

open access: yes, 1966
Described in this paper are the design considerations of the simple element of the two-dimensional RC distributed constant circuit and its applications for the analysis of the transient heat conduction problems in engineering work. This element is formed
Kato, Osamu, Misaki, Takayoshi
core   +1 more source

Bioacoustic analysis of a compound sound with stridulation and forced air produced by the larva of Phileurus valgus (Olivier, 1789) (Coleoptera: Scarabaeidae: Dynastinae: Phileurini)

open access: yesRevista Chilena de Entomología, 2021
It was observed that Phileurus valgus larvae are capable to emit stridulation and forced air sound when disturbed, being able to emit a “compound sound”. Duration, frequencies, oscillograms, spectrograms of the sounds obtained are presented.
Manuel D. Barria   +2 more
doaj   +1 more source

Oscillogram processing algorithm when monitoring cardiac patients’ conditions

open access: yesJournal of Physics: Conference Series, 2021
Abstract The development of hospital information system requires the improvement of diagnostic and monitoring tools. The tools should provide extensive diagnostics and automatic data processing. In that respect volumetric compression oscillometry is considered a promising technique.
G V Abramov, D G Abramov, I P Polovinkin
openaire   +1 more source

Operation stability of sea vessels onboard electrical power system when changing settings of diesel generator governor

open access: yesОмский научный вестник, 2023
The article deals with the issue of ensuring the sustainable operation of ship electrical power systems. Experimental oscillograms of power exchange and in-phase oscillations during parallel operation of diesel generator units are presented.
A. E. Savenko, P. S. Savenko
doaj   +1 more source

The method and devices of autocompensation of phase distortions of direct digital synthesizers of signal formers of georadars [PDF]

open access: yesMATEC Web of Conferences, 2019
The method for isolating the clock frequency of direct digital synthesizers, as well as algorithms and devices for isolating and automatically compensating phase distortions, that significantly improve the spectral characteristics of the formers of the ...
Dorofeev N V   +4 more
doaj   +1 more source

The Effects of Preheating of a Fine Tungsten Wire and the Polarity of a High-Voltage Electrode on the Energy Characteristics of an Electrically Exploded Wire in Vacuum [PDF]

open access: yes, 2006
Results obtained from experimental and numerical studies of tungsten wires electrical explosion in vacuum are presented. The experiments were performed both with and without preheating of the wires, using positive or negative polarity of a high-voltage ...
Baksht, R. B.   +8 more
core   +2 more sources

Detection of Short-Circuited Turns in Secondary Windings of Current Transformers Using Method of Digital Current and Voltage Oscillography While Reading Volt-Ampere Characteristics

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2004
The paper contains processing results of digital current and voltage oscillograms as effective, mean and peak volt-ampere characteristics of a serviceable current transformer with short- circuited turns.
V. Kh. Sapyanik   +2 more
doaj   +1 more source

Development of an algorithm for identifying single-phase ground fault conditions in cable and overhead lines in the networks with isolated neutral

open access: yesEnergy Reports, 2023
The paper addresses the issue of identification of the type of single-phase ground fault in medium voltage networks operating mainly with an isolated neutral. By analyzing the published research, the most promising methods for detection of a single-phase
Andrey A. Achitaev   +4 more
doaj   +1 more source

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