Results 51 to 60 of about 157,516 (285)
Short-circuit protection of LLC resonant converter using voltages across resonant tank elements
The Journal of Engineering, 2015 This paper describes two methods for the short-circuit protection of the LLC resonant converter. One of them uses the voltage across the capacitor and the other uses the voltage across the inductor of the resonant tank.
Denys Igorovych Zaikin
doaj +1 more source
Economic criteria for optimizing the number and load factor of mining transformers [PDF]
, 2019 Purpose. This article discusses how to choose the optimal number and load factor, respectively the economic power in the first year of mining power transformers operation. The analysis is carried out based on technical-economic criteria.
Deliu, F +3 more
core +1 more source
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
Polytechnic and design, 2018 U ovom radu opisani su fenomeni i problemi do kojih dolazi prilikom priključenja transformatora na elektroenergetsku mrežu. Prilikom direktnog priključenja transformatora na mrežu (čak i u praznom hodu) dolazi do pojave visokih tranzijentnih iznosa struje koja može imati razne negativne posljedice. Tranzijentna struja može imati iznos i do desetak puta
Meštrović, Zvonimir +2 more
openaire +3 more sources
The role and implications of mammalian cellular circadian entrainment
FEBS Letters, EarlyView.At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley +1 more source
Overview of Research Status of DC Bias and Its Suppression in Power Transformers
Energies, 2022 In this article, the sources of DC bias and its effects on power transformers are first summarized. Secondly, the article classifies and summarizes the current DC bias calculation problems of power transformers, and puts forward some interesting ...
Youliang Sun +3 more
doaj +1 more source
Burden resistor selection in current transformers for low power applications [PDF]
, 2014 In order to sense AC current with electric isolation in high frequency switching power converters the most simple and low cost solution is to consider a current transformer with a burden resistor.
Bargalló Perpiñá, Ramón +3 more
core
Power losses calculations in windings of gapped magnetic components: The i2D method applied to flyback transformers [PDF]
, 2015 The improved 2-D equivalent analytical calculation method to estimate conductive losses in gapped magnetic components in a wide range of frequencies is extended to the calculations of conduction losses in flyback transformers.
Asensi Orosa, Rafael +3 more
core +1 more source
An aspect of transformer inrush current
Journal of Energy - Energija, 2022 Paper analyzes a sparking phenomena that were observed on power transformers during their first few energizing. Sparks occurred on the flange between tank cover and tank side, in spite of the fact that a jumper (copper link) was used. The phenomenon was observed on transformers from different manufacturers, with various transformer ratings, three or ...
Šulc, Ivan +2 more
openaire +5 more sources
FEBS Letters, EarlyView.This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley +1 more source