نتایج جستجو برای: bidirectional switches

تعداد نتایج: 37117  

Journal: :Neuron 2017
Yuan Chang Leong Angela Radulescu Reka Daniel Vivian DeWoskin Yael Niv

Little is known about the relationship between attention and learning during decision making. Using eye tracking and multivariate pattern analysis of fMRI data, we measured participants' dimensional attention as they performed a trial-and-error learning task in which only one of three stimulus dimensions was relevant for reward at any given time. Analysis of participants' choices revealed that ...

2011
Jin Tao Qi Jie Wang Xu Guang Huang

All-optical plasmonic switches based on a novel coupled nano-disk cavity configuration containing nonlinear material are proposed and numerically investigated. The finite difference time domain simulation results reveal that the single-disk plasmonic structure can operate as an “on– off” switch with the presence/absence of pumping light. We also demonstrate that the proposed T-shaped plasmonic ...

2012
Yi-Pin Ko Yuang-Shung Lee Li-Jen Liu

The multi-phase implementation in the QR (quasi resonant) ZCS (zero current switching) SC (switched capacitor) bidirectional DC-DC converter structure has been proposed to reduce current ripple, switching loss and significantly increase the converter efficiency and power density. This approach provides a more precise output voltage to obtain voltage conversion ratios from the double-mode versus...

2015
B. Ramu

The main objective of this paper, a bidirectional dc–dc converter with duel coupled inductor is proposed. In the boost mode, two capacitors are parallel charged and series discharged by the coupled inductor. Thus, high step-up voltage gain can be achieved with an appropriate duty ratio. The voltage stress on the main switch is reduced by a passive clamp circuit. Therefore, the low resistance RD...

2014
Md. Parvez Akter Saad Mekhilef Nadia Mei Lin Tan Hirofumi Akagi

Energy storage system has been widely applied in power distribution sectors as well as in renewable energy sources to ensure uninterruptible power supply. This paper presents a model predictive algorithm to control a bidirectional AC-DC converter, which is used in an energy storage system for power transferring between the three-phase AC voltage supply and energy storage devices. This model pre...

2000
Siyoung Kim Seung-Ki Sul

In this paper, a new type of ac/ac converter is proposed. The proposed converter is capable of direct ac/ac power conversion and, except for a few small snubber elements, it does not require the use of any input inductors or a dc-link capacitor. In contrast to the matrix converter, which requires bidirectional switches, the proposed converter consists of only unidirectional switches such as ins...

Journal: :Neuron 2014
Hisham E. Atallah Andrew D. McCool Mark W. Howe Ann M. Graybiel

The ventromedial striatum (VMS) is a node in circuits underpinning both affect and reinforcement learning. The cellular bases of these functions and especially their potential linkages have been unclear. VMS cholinergic interneurons, however, have been singled out as being related both to affect and to reinforcement-based conditioning, raising the possibility that unique aspects of their signal...

2004
Jung G. Cho

A new resonant switch and a new family of zerocurrent and zero-voltage mixed-mode switching quasi-resonant converters (QRC’s) called single-cycle resonant converters (SCRC’s) are proposed to improve the performance of the conventional QRC’s. The proposed SCRC’s, which include two active switches operated with zero-current switching (ZCS) and zero-voltage switching (ZVS), respectively, show very...

Journal: :Angewandte Chemie 2022

The precise co-conformation regulation of topologically chiral [2]catenanes under two different external stimuli led to the construction a bidirectional circularly polarized luminescence (CPL) switch, as reported by Xiao He, Wei Wang and Hai-Bo Yang et al. in their Research Article (DOI: 10.1002/anie.202210542). results provide not only an attractive approach toward multistate CPL switches for ...

Journal: :IEEE Transactions on Power Electronics 2021

Current-fed half bridge converter with bidirectional switches on ac side and a full dc of high frequency transformer is an optimal topology for single stage galvanically isolated ac-dc onboard vehicle charging application. AC are actively commutated to achieve zero current switching (ZCS) using phase shift modulation (SPSM) discontinuous (DCPSM). Furthermore, voltage turn-on (ZVS) achieved swit...

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