Results 71 to 80 of about 862,429 (261)
IEEE transactions on power electronics, 2017 This paper proposes a modulation strategy for multilevel multiphase diode-clamped dc–ac converters (also applicable to other functionally equivalent topologies) able to keep the dc-link capacitor voltages balanced under passive front ends, low frequency ...
S. Busquets-Monge +3 more
semanticscholar +1 more source
Intensity Noise Dynamics in Terahertz Quantum Cascade Lasers
Laser &Photonics Reviews, EarlyView.Intensity‐noise dynamics in terahertz quantum cascade lasers are investigated across single‐mode, dense‐comb and harmonic‐comb regimes using graphene thermoelectric detectors. Harmonic combs show ∼10% lower relative intensity noise, while RIN scales as P0−γ$P_0^{ - \gamma }$ with γ≈1.2$\gamma \approx 1.2$, revealing a crossover from spontaneous ...
M. Alejandro Justo‐Guerrero +5 more
wiley +1 more source
IEEE AccessThis paper introduces the multi-neighboring reference vector discontinuous pulse-width modulation (MNRV DPWM) with offset voltage injection methodology tailored for single-phase diode-clamped four-level PWM inverters.
Min-Sup Song
doaj +1 more source
Optical Detuning Strategies for Shielded Loop Resonators
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To compare detuning performance and evaluate power requirements of optical detuning methods and to demonstrate feasibility of an optically‐detuned 4‐channel receive array. Methods Four optical detuning methods were compared in simulations, bench tests, and phantom measurements at 3T against conventional galvanic detuning.
Jakob Gerlach +7 more
wiley +1 more source
External cavity diode lasers and non-linear optical frequency conversion in spectroscopic applications [PDF]
, 2006 Semiconductor diode lasers are successful tools in atomic spectroscopy. They are routinely used in frequency conversion applications to develop devices that access regions of the spectrum not directly available.
Shah, Anjali
core +2 more sources
Packet equalisation in PONs using adjustable gain-clamped semiconductor optical amplifiers (AGC-SOA) [PDF]
, 2011 The past ten years have witnessed a dramatic growth in the delivery of high bandwidth services through Passive Optical Networks (PONs), directly to the home or to the kerb.
Michie, Walter +3 more
core +3 more sources
A High-Efficiency Diode-Clamped Linear Amplifier
IEEJ Transactions on Industry Applications, 2007 This paper proposes a new power converter without any switching operation, which works as a linear amplifier. The main circuit of the proposed converter consists of series-connected MOSFETs, series-multi dc power supplies and clamping diodes. The circuit configuration is similar to a diode-clamped multi-level inverter, except for using complementary ...
openaire +2 more sources
IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.The modulating light irradiation method can estimate the target cell voltage in a working photovoltaic module without electrical contact. This method requires the differential resistances (DRs) of the target cell and module to quantitatively estimate the voltage.
Yasuyuki Kobayashi +2 more
wiley +1 more source
Three-Phase Diode-Clamped Four-Level PWM Inverter With Offset Voltage Injection
IEEE AccessIn this paper, a three-phase diode-clamped four-level PWM inverter with offset voltage injection is proposed. The proposed inverter is based on multi-neighboring reference vector (discontinuous) pulse-width modulation (MNRV (D)PWM), where multiple ...
Min-Sup Song, Jaewon Kim, Hwan-Hee Cho
doaj +1 more source
International Journal of Cosmetic Science, EarlyView.This study demonstrates that full‐thickness 3D in vitro skin models reliably assess the permeation of cosmetic polyphenols, revealing compound‐specific transport profiles and bridging the gap between conventional cell models and ex vivo human skin, while offering an ethical and robust alternative for dermal absorption screening. Abstract The evaluation
Mariana Marques +6 more
wiley +1 more source