Results 41 to 50 of about 471,152 (307)
Research on a technique of wireless power transfer based on semi-bridge rectifier
Dianzi Jishu Yingyong, 2019 This paper proposed a technique of maximum efficiency and constant voltage output for wireless power transfer system. A semi-bridge rectifier is used to replace the common diode rectifier on the receiver side, and a Boost circuit is adopted to regulate ...
Lin Jiang, Xie Yue
doaj +1 more source
Minimum-Output-Current-Ripple Control of Current-Fed Three-Level Phase-Shift Full-Bridge Converter
Energies, 2022 Electrified ports using medium-voltage DC (MVDC) renewable energy microgrids require current-fed dc/dc converters in application scenarios such as battery or ultracapacitor charging units and hydrogen production systems.
Haichao Wang +5 more
doaj +1 more source
Temperature compensation of light-emitting diodes [PDF]
, 1972 Circuit which includes a thermistor-resistor combination to compensate for temperature fluctuations by supplying input voltage to light-emitting diode, maintains constant light output.
Burrous, C. N., Deboo, G. J.
core +1 more source
Model $I$--$V$ curves and figures of merit of underdamped deterministic Josephson ratchets
, 2016 We propose simple models for the current-voltage characteristics of typical Josephson ratchets. We consider the case of a ratchet working against a constant applied counter force and derive analytical expressions for the key characteristics of such a ...
Goldobin, E. +3 more
core +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
IEEE Open Journal of Power ElectronicsSub-resonant frequency (SRF) operation of inductive wireless power transfer systems (IWPTS) allows attaining constant current (CC) output under varying coupling and output voltage conditions while minimizing transmitter volt-ampere (VA) rating ...
Andrey Vulfovich, Alon Kuperman
doaj +1 more source
Transformer regulated self-stabilizing chopper [PDF]
, 1969 A self-stabilizing voltage regulator is described. Direct current voltage regulation employing a series transistor rendered conductive during various portions of a cycle is controlled by saturation of an autotransformer. The constant volt-second capacity
Raposa, F. L.
core +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Single-Source Multi-Battery Solar Charger: Analysis and Stability Issues
Energies, 2015 In this paper, dynamic analysis of a multi-battery dual mode charger, powered by a single solar array and suitable for lead-acid and lithium-ion cell-based batteries is presented.
Alon Kuperman +4 more
doaj +1 more source
Wide-temperature integrated operational amplifier [PDF]
, 2009 The present invention relates to a reference current circuit. The reference circuit comprises a low-level current bias circuit, a voltage proportional-to-absolute temperature generator for creating a proportional-to-absolute temperature voltage (VPTAT ...
Blalock, Benjamin J. +6 more
core +1 more source