Results 311 to 320 of about 1,874,316 (354)

High-frequency thin-film piezoelectric transformers

2012 IEEE International Frequency Control Symposium Proceedings, 2012
A voltage step-up/impedance transformer is presented which operates by modifying the electrode configuration of lateral-extensional mode thin-film piezoelectric-on-substrate (TPoS) resonators. The individual electrode pairs that cover the stress concentration areas of a 10th order harmonic 30MHz resonator are connected in series at the output port to ...
Hediyeh Fatemi, Reza Abdolvand
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Design considerations for high power high frequency transformers

21st Annual IEEE Conference on Power Electronics Specialists, 2002
Various design considerations for high-power (multikilowatt), high-frequency transformers for DC-DC power converters are investigated. Although Ferrite (PC40) is lossier than Permalloy80 (0.5 mil) at the frequencies of interest (25-50 kHz) the use of the former is justified on the basis of cost, weight, and wide ranges of shapes.
M.H. Kheraluwala, D.W. Novotny, D.M. Divan   +2 more
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Calculation of Leakage Inductance for High-Frequency Transformers

IEEE Transactions on Power Electronics, 2015
Frequency-dependent leakage inductance is often observed. The high-frequency eddy current effects cause a reduction in leakage inductance. The proximity effect between adjacent layers is responsible for the reduction of leakage inductance. This paper gives a detailed analysis of high-frequency leakage inductance and proposes an accurate prediction ...
Ouyang, Ziwei, Zhang, Jun, Hurley, William Gerard   +2 more
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High voltage, high frequency transformer switching converter integration

IET Conference on High Power RF Technologies, 2009
This paper presents a high voltage (HV), high frequency (HF) transformer with high voltage rectifier. The described systems employ a low profile HV, HF transformers and voltage bridge technology multiplier. A model of the converter of 150 kW is presented and verified by Saber simulator.
T. Filchev, D. Cook, J. Clare, P. Wheeler   +3 more
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Gabor transform for interictal high frequency oscillations classification

2015 International Conference on Advances in Biomedical Engineering (ICABME), 2015
Interictal High Frequency Oscillations (HFOs [30–600 Hz]) have been recently used as reliable biomarkers for epileptogenic zones. Intra- and inter-subject variations represent the main source of HFOs diversity in terms of spectral and temporal characteristics. According to spectral characteristics, HFOs are usually classified into four sub-bands: gamma,
Jrad, Nisrine, Kachenoura, Amar, Merlet, Isabelle, Wendling, Fabrice   +3 more
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High-frequency power transformer modeling

2013
The detailed study of high-frequency over- voltages propagating inside the electrical systems of a power plant requires a precise modeling of power transformers at high frequencies. These over- voltages may originate from lightning overvoltage propagating along the transmission line and crossing the step-up transformer, they may originate also for ...
Filipović-Grčić, Božidar, Uglešić, Ivo, Jurišić, Bruno   +2 more
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An ultimate high frequency transformer

1992. Digests of Intermag. International Magnetics Conference, 1992
H. Saotome, T. Ogawa, S. Hayano, Y. Saito   +3 more
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New, high frequency transformer topologies

Proceedings:Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 2002
J. Masi, W. Thibault
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High-Frequency Transformers for Wireless Charging

This paper explores the principles, design challenges, and real-world applications of high-frequency transformers in wireless power transfer (WPT) systems. These transformers operate at elevated frequencies—typically above 100 kHz—enabling compact, efficient, and safe energy transmission across air gaps.
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Difficulties in high frequency transformer modelling

2015
Traditional transformer models available in EMTPlike software packages are not capable of representing transformer behavior during a transient state, which includes high frequencies, since they usually do not adequately take into account the transformer resonant behavior caused by its highly complicated design.
Jurišić, Bruno, Xemard, Alain, Uglešić, Ivo, Paladian, Francoise, Guuinic, Philippe   +4 more
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