Results 71 to 80 of about 571 (264)

Voltage convertors for microprocessor devices

open access: yes, 2009
The task of this semester work is carried out summary converters DC / DC power supply suitable for small microprocessor devices with LCD display. As the input source voltage is 9V battery or two batteries (3V).
Kus, Václav
core  

Sur les convertisseurs thermoélectroniques utilisant un rayonnement photonique comme source ionisante

open access: yes, 1965
The number of positive ions produced for emitter temperatures above 1500 °K is sufficient to neutralize the electron space charge. Below this temperature the process is incomplete.
J. Millet, J.P. David, J. Bensimon
core   +1 more source

Report of multijunction thermal convertor interlaboratory comparison study for measurements at Sandia National Laboratory. [PDF]

open access: yes, 2009
Two Multijunction Thermal Voltage Converters (MJTCs) were provided to the Sandia National Laboratory Primary Standards Laboratory (Sandia PSL) as part of an interlaboratory comparison (ILC).
Klemme, Beverly J., Beverly Klemme
core   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

open access: yesFEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj   +3 more
wiley   +1 more source

Variable DC voltage based reactive power enhancement scheme for MMC‐STATCOM

open access: yesIET Smart Grid
Constrained by the AC voltage amplitude modulated by a modular multilevel converter‐based static synchronous compensator (MMC‐STATCOM), its reactive power output may be subject to oscillations under grid contingencies, posing a threat to the grid stable ...
Lujie Yu   +4 more
doaj   +1 more source

DC voltage margin adaptive droop control strategy of VSC-MTDC systems

open access: yesThe Journal of Engineering, 2019
In this study, direct current (DC) voltage margin control strategy and droop control strategy of voltage source converter multi-terminal direct current (VSC-MTDC) are introduced firstly, and according to the characteristics of two control strategies, an ...
Zhi Ping Cheng   +3 more
doaj   +1 more source

Low power bandgap voltage references

open access: yes, 2015
Bandgap voltage reference plays an important part in many circuits such as data convertors, voltage regulators, and oscillators. It provides a relatively constant voltage to other circuit blocks.
Zhou, Wei
core  

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

Analysis of DC voltage oscillation mechanism in AC/DC hybrid distribution system

open access: yesThe Journal of Engineering, 2019
DC voltage oscillation occurs more and more frequently in voltage source converter (VSC)-based AC/DC hybrid distribution system (AC/DC HDS). However, currently, the explanation of the oscillation mechanism is not clear enough.
Luyang Li   +4 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

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