Results 21 to 30 of about 243,917 (303)
Annular symmetry nonlinear frequency converters
Optics Express, 2006 We present a new type of two-dimensional nonlinear structure for quasi-phase matching. This structure has continuous rotational symmetry, and in contrary to the commonly used periodic structures, is not lattice shaped and has no translation symmetry. It is shown that this annular symmetry structure possesses interesting phase matching attributes that ...
Dror, Kasimov +6 more
openaire +2 more sources
Sigma-delta A/D converter in HTS ramp edge technology [PDF]
, 2001 We have successfully fabricated and tested a high temperature superconducting sigma-delta A/D converter, The quantizer is a balanced comparator that has been characterized separately in two temperature regimes. The circuits have been fabricated with ramp
Gerritsma, G.J. +4 more
core +2 more sources
A Novel Constant-Frequency Quasi-Resonant Converter
IEEE Access, 2018 In this paper, a new constant-frequency LL switch-capacitor (LLSC) quasi-resonant converter is proposed. Compared with the traditional frequency voltage regulation instruments, the proposed converter can effectively reduce the volume of magnetic ...
Tianyu Zhu +3 more
doaj +1 more source
Frequency Characteristics of Power Transformer for Isolated DC-DC Converter
IEEE Access, 2022 The operational frequency of a transformer is an important factor in the configuration of an isolated DC-DC converter. However, discussions of this frequency are inadequate. This study focuses on the frequency characteristics of the transformers.
Takayuki Nakamura, Toshiyuki Murakami
doaj +1 more source
Compensated Current Injection circuit, theory and applications [PDF]
, 2002 This paper presents a detailed description, analysis and example of practical application of a wide frequency band voltage-to-current converter. The converter is characterized by a combination of positive and negative feedback loops.
Giorgio Fontana +3 more
core +2 more sources
A Novel High Efficiency Quasi-Resonant Converter
Energies, 2018 In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency.
Tianyu Zhu +3 more
doaj +1 more source
Parameters Optimization of an Intermediate Frequency Isolated SiC Power DC-DC Converter
IEEE Access, 2022 To improve the lightweight level of auxiliary converters for urban rail vehicles, full SiC intermediate frequency auxiliary converters have become a trend.
Chengwei Kang +7 more
doaj +1 more source
Design of mine cascade converter with wide input voltage range
Gong-kuang zidonghua, 2022 The converter used in the power supply has problems of low voltage gain, high voltage stress of power tube, non-electrical isolation and complex control.
LIU Yangqing, ZHOU Yuan
doaj +1 more source
Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control [PDF]
, 2014 Several papers have been published recently on TPS control of dual active bridge (DAB) converter, however, no complete study of the converter operation behaviour exists, that takes into account all switching modes in both charging and discharging ...
Aboushady, A.A. +3 more
core +3 more sources
Improvement of speed response in four-phase DC–DC converter switching using two shunt voltage-source [PDF]
, 2018 This study proposes a technique that is able to improve the speed response of a four-phase DC–DC converter switching. The basic concept of the proposed technique is the inclusion of two shunt-connected voltage sources in series to the converter system ...
A. Yahaya, Jabbar +2 more
core +1 more source