Results 21 to 30 of about 230 (201)

Conductive Hearing Loss Produces a Reversible Binaural Hearing Impairment [PDF]

The Journal of Neuroscience, 1999
Conductive hearing loss, produced by otitis media with effusion, is widespread in young children. However, little is known about its short- or long-term effects on hearing or the brain. To study the consequences of a conductive loss for the perception and processing of sounds, we plugged the left ear canal of ferrets for 7–15 months during either ...
Moore, D R, Hine, J E, Jiang, Z D, Matsuda, H, Parsons, C H, King, A J   +5 more
openaire   +4 more sources

Characterization and optimization of active negative voltage driving circuit for CoolGaN HEMTs in a phase-leg configuration

Energy Reports, 2022
The high switching speed of GaN HEMT will cause serious crosstalk in the phase-leg configuration. The negative turn-off driving voltage is usually recommended to avoid the parasitic shoot-through.
Haihong Qin, Wenlu Wang, Sixuan Xie, Xiang Han, Zhenxiang Xu, Lingyan Wang   +5 more
doaj   +1 more source

Vertical GaN Power MOSFET with Integrated Fin-Shaped Diode for Reverse Conduction

Nanoscale Research Letters, 2022
A vertical GaN power MOSFET featuring an integrated fin-shaped non-junction diode (FDMOS) is proposed to improve reverse conduction and switching characteristics.
Tao Sun, Xiaorong Luo, Jie Wei, Kemeng Yang, Siyu Deng, Zhijia Zhao, Yanjiang Jia, Bo Zhang   +7 more
doaj   +1 more source

Characterization and optimization of gate driver turn-off voltage for eGaN HEMTs in a phase-leg configuration

Energy Reports, 2022
Affected by high switching speed and parasitic parameters, crosstalk problem of eGaN HEMT in a phase-leg configuration cannot be ignored. By decreasing gate driver turn-off voltage, the false turn-on phenomenon of device caused by crosstalk can be ...
Haihong Qin, Wenlu Wang, Zihe Peng, Ao Liu, Song Bai   +4 more
doaj   +1 more source

T-NPC Soft-Commutated Inverter Based on Reverse Blocking IGBTs with the Novel Concept of a DESAT Control Circuit in the Gate Driver

Energies, 2023
This article presents the concept of switching and conduction loss reduction in a T-NPC inverter based on IGBT transistors. The method of limiting switching losses involves the connection of an LC circuit designed to cause transistors in vertical ...
Andrzej Mondzik
doaj   +1 more source

High voltage gain resonant DC-DC converter with vm cells for renewable sources applications [PDF]

Serbian Journal of Electrical Engineering, 2022
Due to the widespread impact of renewable energy resources on high power density grids, transmission at the DC regime has been considered more useful than AC transmission systems.
Hasanzadeh Saeed, Salehi Seyed Mohsen, Najafi Ehsan, Horri Farinaz   +3 more
doaj   +1 more source

A Fast Recovery SiC TED MOS MOSFET with Schottky Barrier Diode (SBD)

Crystals, 2023
Achieving low conduction loss and good channel mobility is crucial for SiC MOSFETs. However, basic planar SiC MOSFETs provide challenges due to their high density of interface traps and significant gate-to-drain capacitance.
Hongyu Cheng, Wenmao Li, Peiran Wang, Jianguo Chen, Qing Wang, Hongyu Yu   +5 more
doaj   +1 more source

Distributed Integral Convex Optimization-Based Current Control for Power Loss Optimization in Direct Current Microgrids

Energies, 2023
Due to the advantages of fewer energy conversion stages and a simple structure, direct current (DC) microgrids are being increasingly studied and applied.
Yajie Jiang, Siyuan Cheng, Haoze Wang
doaj   +1 more source

Analysis and Evaluation of WBG Power Device in High Frequency Induction Heating Application

Energies, 2020
A device suitability analysis is performed herein by comparing the performance of a silicon carbide (SiC) metal-oxide-semiconductor-field-effect transistor (MOSFET) and a gallium nitride (GaN) high-electron mobility transistor (HEMT), which are wide ...
Kwang-Hyung Cha, Chang-Tae Ju, Rae-Young Kim   +2 more
doaj   +1 more source

A study on power losses of the 50 kVA SiC converter including reverse conduction phenomenon [PDF]

Bulletin of the Polish Academy of Sciences Technical Sciences, 2016
Abstract This paper deals with performance of the 50 kVA three-phase converter built with switches based on SiC MOSFET and anti-parallel Schottky diodes. In contrast to popular IGBT converters, a negative switch current is capable of flowing through the reverse conducting transistor, which results in different distribution of power losses among the ...
J. Rąbkowski, T. Płatek
openaire   +1 more source