Results 191 to 200 of about 782,951 (248)
Advanced Science, EarlyView.This work reports on epitaxially grown Hf0.52Zr0.48O2 ferroelectric memristors with high stability (high durability exceeding 108 cycles and a retention time exceeding 104 s for 16 states) and ultra‐low operating energy consumption (∼121 fJ). A memristor array‐based reservoir computing system is constructed and applied for the first time in the field ...
Ying Liu +6 more
wiley +1 more source
Understanding and Designing Phase Change Materials: Insights From Atom Probe Tomography
Advanced Science, EarlyView.Atom probe tomography can distinguish metallic, covalent, and metavalent bonds based upon their bond rupture; in particular, the probability to form more than one ion (PME) in laser‐assisted field evaporation. These findings open new avenues in understanding and designing phase change materials (PCMs) since they allow quantification of bonds in solids ...
Jan Köttgen +3 more
wiley +1 more source
Advanced Science, EarlyView.An origami worm‐inspired robot achieves multimodal locomotion in confined pipelines through mechatronic integration that embeds actuation, control, and communication within each origami module. Large, reversible configuration and dimensional changes enable 25 gaits synthesized by a unified framework across peristaltic, inchworm, and wheel‐rolling modes
Qiwei Zhang +6 more
wiley +1 more source
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IEEE Transactions on Aerospace and Electronic Systems, 1993
The characteristics of a push-pull parallel resonant converter (PPRC) when operated as a DC-DC transformer were investigated theoretically and experimentally. In the DC-DC transformer region, the voltage transfer ratio of the PPRC was found to be practically constant and independent of the input voltage and load.
G. Ivensky +3 more
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The characteristics of a push-pull parallel resonant converter (PPRC) when operated as a DC-DC transformer were investigated theoretically and experimentally. In the DC-DC transformer region, the voltage transfer ratio of the PPRC was found to be practically constant and independent of the input voltage and load.
G. Ivensky +3 more
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IEEE Transactions on Power Electronics, 2014
A component level dc transformer is described in which no alternating currents or voltages are present. It operates by combining features of a homopolar motor and a homopolar generator, both dc devices, such that the output voltage of a dc power supply can be stepped up (or down) with a corresponding step down (or up) in the current.
Robert C. Youngquist +2 more
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A component level dc transformer is described in which no alternating currents or voltages are present. It operates by combining features of a homopolar motor and a homopolar generator, both dc devices, such that the output voltage of a dc power supply can be stepped up (or down) with a corresponding step down (or up) in the current.
Robert C. Youngquist +2 more
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Analysis of DC-DC Converters Containing a Transformer
2006 IEEE International Symposium on Circuits and Systems, 2006This paper gives rigorous analysis of a kind of switching converters containing a transformer and shows that some graph-theoretic interpretation for them to work as DC-DC converters is possible.
Tetsuo Nishi, Masato Ogata
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IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021
Multiwinding-Transfomer-based (MTB) DC-DC converter is an interesting possibility to interconnect several energy systems and to offer higher power density because of the reduction of transformer core material and reduction of power converter stages. MTB DC-DC converters can be considered as an interesting compromise between non-modular and modular DC ...
Thiago Pereira +2 more
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Multiwinding-Transfomer-based (MTB) DC-DC converter is an interesting possibility to interconnect several energy systems and to offer higher power density because of the reduction of transformer core material and reduction of power converter stages. MTB DC-DC converters can be considered as an interesting compromise between non-modular and modular DC ...
Thiago Pereira +2 more
openaire +1 more source
Research on LLC DC-DC Transformer
Applied Mechanics and Materials, 2013Regulated DC-DC converter and unregulated DC-DC transformer is the basic types of DC-DC converter. Now the research is focusing on the regulated form named regulated LLC resonant DC-DC converter. Unregulated form of LLC resonant DC-DC converter named LLC resonant DC-DC transformer is studied in this paper in order to increase the practical topology of ...
Xian Tao Zhu +3 more
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Research on a novel DC-DC transformer
2011 International Conference on Electric Information and Control Engineering, 2011With the development of power electronic technology and the distributed generations, it is expected that transformer function can be realized by using power devices and the bulk and cost of transformer will be reduced. So the DC-DC transformers whose voltage isn't regulated with the load and the input voltage are focused on in resent years.
null Xianjin Zhang, null Caihong Fan
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The biased transformer DC-to-DC converter
1976 IEEE Power Electronics Specialists Conference, 1976A dc-to-dc converter design based on the constant-current flux-reset principle is presented. Such converters use a mulitude of separate individual half-wave switching sections. Each section consists of a power transistor and a transformer which is reset through an external bias current source.
Manfred Lilienstein, Raymond S. Miller
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