Results 81 to 90 of about 20,353 (286)
Advanced Engineering Materials, EarlyView.Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel +6 more
wiley +1 more source
Analysis and Control of Electrolytic Capacitor-Less LED Driver Based on Harmonic Injection Technique
Energies, 2018 AC-DC LED drivers may have a lifespan shorter than the lifespan of LED chips if electrolytic capacitors are used in their construction. Using film capacitors solves this problem but, as their capacitance is considerably lower, the low-frequency ripple ...
Mahmoud Nassary +4 more
doaj +1 more source
A capacitor mismatch calibration scheme for SAR ADC based on genetic algorithm
Electronics Letters, 2023 Capacitor mismatch problem due to process variation causes weight error, which deteriorates the linearity of SAR ADC. In this paper, a novel calibration scheme based on genetic algorithm(GA) combined with a radix‐less‐than‐2 SAR ADC is proposed to ...
Yujia Huang +4 more
doaj +1 more source
Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding
Advanced Engineering Materials, EarlyView.This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou +6 more
wiley +1 more source
Zhongguo dianli, 2019 Three-phase four-switch rectifier has the problem of unbalanced capacitor voltage because one phase of its AC side is directly connected between two capacitor neutral points on the DC side.
Baoge ZHANG, Weijie MA
doaj +1 more source
Pre-energized auxiliary circuits for very fast transient loads: Coping with load-informed power management for computer loads [PDF]
, 2014 published_or_final_versio
Shan, ZY, Tan, SC, Tse, CK
core +1 more source
Advanced Engineering Materials, EarlyView.Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar +5 more
wiley +1 more source
Precise Dimming and Color Control of Light-Emitting Diode Systems based on Color Mixing [PDF]
, 2015 published_or_final_versio
Chen, H, Hui, SYR, Lee, TLA, Tan, SC
core +1 more source
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Power Flow Analysis and Critical Design Issues of Retrofit Light-Emitting Diode (LED) Light Bulb [PDF]
, 2015 published_or_final_versio
Chen, H, Hui, SYR, Li, S, Tan, SC
core +1 more source