Results 41 to 50 of about 530,026 (287)

An Interleaved Zero-Voltage Zero-Current Switching High Step-Up DC-DC Converter

IEEE Access, 2021
An interleaved zero-voltage zero-current switching (ZVZCS) high step-up DC-DC converter is proposed for modern photovoltaic power generation systems. The proposed converter can achieve high voltage conversion gain without operating under extreme duty ...
Binxin Zhu, Shihuan Chen, Yao Zhang, Yu Huang   +3 more
doaj   +1 more source

Zero-Voltage and Zero-Current Switching Converters

International Journal of Computer Applications, 2010
This paper deals with the simulation of a PWM three-level (3L) & five level (5L) converters. The modulation strategies can be classified into two kinds according to the turn-off sequence of the two switches of the pair of switches. The concept of the leading switches and the lagging switches is introduced to realize softswitching for PWM 3L and 5L ...
P. Sangameswararaju, K.Chandra sekar, G.Nageswara rao   +2 more
openaire   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gabor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Zero-Current-Switched Three-Phase SVM-Controlled Buck Rectifier

IEEE Transactions on Industrial Electronics, 2005
A zero-current-transition (ZCT) cell is analyzed and designed to be used with a three-phase pulsewidth-modulation buck rectifier. This rectifier was space-vector controlled and used unidirectional current switches. The proposed ZCT circuit is load independent and achieves a high noise and voltage stress reduction and provides ZCTs to almost all ...
Sanchis Kilders, Esteban, Maset Sancho, Enrique, Carrasco, J.A., Ejea Martí, Juan Bautista, Ferreres Sabater, Agustín, Dede García-Santamaría, Enrique, Esteve Gómez, Vicente, Jordán Martínez, José, García Gil, Rafael   +8 more
openaire   +2 more sources

Accurate Measurement of Dynamic on-State Resistances of GaN Devices under Reverse and Forward Conduction in High Frequency Power Converter [PDF]

, 2020
Because of trapped charges in GaN transistor structure, device dynamic ON-state resistance RDSon is increased when it is operated in high frequency switched power converters, in which device is possibly operated by zero voltage switching (ZVS) to reduce ...
Evans, Paul, Idir, Nadir, Johnson, Mark, Li, Ke, Videt, Arnaud   +4 more
core   +4 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Adult‐Onset Subacute Sclerosing Panencephalitis Presenting With Subacute Cognitive Deficits

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT We describe the case of a 41‐year‐old man diagnosed with adult‐onset subacute sclerosing panencephalitis (SSPE). The patient presented with subacute progressive cognitive deficits and a neuropsychological profile indicating predominant frontoparietal dysfunction. MRI showed only mild parietal‐predominant cerebral atrophy.
Dennis Yeow, Nicola McKern, Vincent Oxenham, Kate Ahmad, Omar Ahmad   +4 more
wiley   +1 more source

The Class-E/F Family of ZVS Switching Amplifiers [PDF]

, 2003
A new family of switching amplifiers, each member having some of the features of both class E and inverse F, is introduced. These class-E/F amplifiers have class-E features such as incorporation of the transistor parasitic capacitance into the circuit ...
Aoki, Ichiro, Hajimiri, Ali, Kee, Scott D., Rutledge, David   +3 more
core   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Detecting Current Noise with a Josephson Junction in the Macroscopic Quantum Tunneling Regime

, 2006
We discuss the use of a hysteretic Josephson junction to detect current fluctuations with frequencies below the plasma frequency of the junction. These adiabatic fluctuations are probed by switching measurements observing the noise-affected average rate ...
A. V. Timofeev, A.J. Leggett, B. Reulet, C.W.J. Beenakker, D. Esteve, D.E. McCumber, G. Schön, J. Ankerhold, J. Bylander, J. Claudon, J. P. Pekola, J. Salo, J. T. Peltonen, J. Tobiska, J.M. Martinis, J.P. Pekola, J.P. Pekola, K.E. Nagaev, K.K. Likharev, L.S. Levitov, L.S. Levitov, M. Duckheim, M. Meschke, R.K. Lindell, S. Gustavsson, T. Ojanen, T.T. Heikkilä, U. Weiss, V. Brosco, W. Lu, W.C. Stewart, Y.M. Blanter, Yu. Bomze   +32 more
core   +1 more source