Results 51 to 60 of about 93,869 (287)
Partial Discharge in Electronic Equipments [PDF]
, 2009 Tato disertační práce se věnuje studiu částečných výbojů (PD) způsobených poklesem spolehlivosti a životnosti elektronických zařízení a systémů. Diagnostika PD je dnes známá metoda pro vysoké napětí u vysoko-výkonných zařízení.
Mammadov, Anar
core
Power transformer protection using microcontroller-based relay [PDF]
, 2007 Protection of power transformers is a very challenging problem in power system relaying. Since it is very important to minimize the frequency and duration of unwanted outages, this is a high demand imposed on power transformer protective relays.
Bashi, Sinan Mahmod +2 more
core +1 more source
An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots
FEBS Letters, EarlyView.This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino +7 more
wiley +1 more source
High Frequency Transformer Modelling
, 2016 The aim of this poster is to describe the “Grey box" transformer model based on the basic geometry of the transformer which is suitable for calculation of transmitted overvoltages through the transformer in the time domain.
Jurišić, Bruno +3 more
openaire +2 more sources
Applied Sciences, 2022 Partial Discharge (PD) is one of the symptoms of an electrical insulation problem, and its permanence can lead to the complete deterioration of the electrical insulation in high-voltage equipment such as power transformers.
Hamidreza Besharatifard +4 more
doaj +1 more source
, 1984 The object of the invention is to provide an improved converter for converting one direct current voltage to another. A plurality of phased square wave voltages are provided from a ring counter through amplifiers to a like plurality of output ...
Garrett, H. +3 more
core +1 more source
First Approach for the Modelling of the Electric Field Surrounding a Piezoelectric Transformer in View of Plasma Generation [PDF]
, 2012 This paper is about an open multi-physics modelling problem resulting from recent investigations into plasma generation by piezoelectric transformers.
Lefèvre, Yvan +2 more
core +2 more sources
Hematopoietic (stem) cells—The elixir of life?
FEBS Letters, EarlyView.The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source
High frequency winding design for planar switch mode transformers [PDF]
, 2008 Switch mode power supplies as a mass produced article leave room for optimization especially at the voluminous magnetic components. Hereby planar component designs can reduce the overall height of the power supply and give it a more compact design. Since
Büttner, André +2 more
core
Transformation ray method: Controlling high frequency elastic waves (L) [PDF]
The Journal of the Acoustical Society of America, 2012 Elastic ray theory is a high frequency asymptotic approximation of solution of elastodynamic equation, and is widely used in seismology. In this paper, the form invariance under a general spatial mapping and high frequency wave control have been examined by transformation method.
Chang, Zheng +3 more
openaire +3 more sources