Results 31 to 40 of about 1,389,297 (254)
Optical Gain in Semiconducting Polymer Nano and Mesoparticles
Molecules, 2021 The presence of excited-states and charge-separated species was identified through UV and visible laser pump and visible/near-infrared probe femtosecond transient absorption spectroscopy in spin coated films of poly[N-9″-heptadecanyl-2,7-carbazole-alt-5 ...
Mark Geoghegan +8 more
doaj +1 more source
Extension of a Virtual Refrigerant Charge Sensor [PDF]
, 2012 The primary goal of the work described in this paper was to evaluate and extend a virtual refrigerant charge sensor (VRC) for determining refrigerant charge for equipment having variable-speed compressors and fans.
Kim, Woohyun, Braun, James E.
core +1 more source
Fundamentals of Centrifugal Pump and System Interaction [PDF]
, 2011 Short CoursePumps are an integral part of your industry, yet engineers, operators, and maintenance technicians are seldom fully trained to handle the pump problems they encounter daily.
Volk, Michael, Volk, Mike
core +1 more source
A Low Mismatch Current Charge Pump Applied to Phase-Locked Loops
MicromachinesThis paper presents a charge pump circuit with a wide output range and low current mismatch applied to phase-locked loops. In this designed structure, T-shaped analog switches are adopted to suppress the non-ideal effects of clock feedthrough, switching ...
Min Guo +4 more
doaj +1 more source
Design of a dual-input cross-connected charge pump utilizing scavenged energy
Energy Reports, 2020 This paper presents a novel dual-input cross-connected charge pump utilizing scavenged energy. The proposed converter has two input sources: a battery input and a scavenged energy input. Unlike existing charge pumps, the proposed converter alleviates the
Kei Eguchi +3 more
doaj +1 more source
Refrigerant Charge Fault Detection and Diagnosis Algorithm for Water-to-Water Heat Pump Unit
Energies, 2019 Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally
Samuel Boahen +2 more
doaj +1 more source
Photonics, 2021 The time dynamics of nonequilibrium charge carrier relaxation processes in SI GaAs:EL2 (semi-insulating gallium arsenide compensated with EL2 centers) and HR GaAs:Cr (high-resistive gallium arsenide compensated with chromium) were studied by the optical ...
Irina A. Kolesnikova +8 more
doaj +1 more source
FEBS Letters, EarlyView.We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace +6 more
wiley +1 more source
Novel CMOS Bulk-driven Charge Pump for Ultra Low Input Voltage [PDF]
Radioengineering, 2016 In this paper, a novel bulk-driven cross-coupled charge pump designed in standard 90 nm CMOS technology is presented. The proposed charge pump is based on a dynamic threshold voltage inverter and is suitable for integrated ultra-low voltage converters ...
G. Nagy +3 more
doaj
Negative Output Voltage Ripples of Bipolar DC–DC Converter LM27762 near Maximum Input Voltage
Российский технологический журнал, 2019 The paper presents the results of studies of the operation of the inverting DC–DC converter with charge pump and LDO, which are part of the combined bipolar secondary power supply LM27762, at the near to maximum input voltage of 5.5 V and an output ...
V. K. Bityukov +2 more
doaj +1 more source