Results 31 to 40 of about 19,714,201 (367)

Characterizing Semiconductor Devices for All-Electric Aircraft

open access: yesIEEE Access, 2023
Cryogenic propulsion with hydrogen fuel cells replacing fossil fuels is a promising solution to cut carbon emissions in the aviation sector. Hydrogen will also be used for cooling the superconducting machines and power converter circuits.
Abdelrahman Elwakeel   +7 more
doaj   +1 more source

Quantum Information Processing and Entanglement in Solid State Devices [PDF]

open access: yes, 2004
Control over electron-spin states, such as coherent manipulation, filtering and measurement promises access to new technologies in conventional as well as in quantum computation and quantum communication.
Kawabata, Shiro
core   +1 more source

A switching threshold programmable high-linearity transimpedance amplifier for OLED pixel current mismatch measurement

open access: yesJournal of Information Display, 2020
In this paper, we present a new switching threshold programmable transimpedance amplifier (TIA) for OLED pixel current measurement system. The TIA is composed of an inverter-based cascode amplifier that achieves DC gain of 87 dB for high linearity.
Jinook Jung, Jintae Kim
doaj   +1 more source

Measurement of Coastal Currents

open access: yesCoastal Engineering 1968, 1968
Getting a drift buoy into and over the surf zone in rough weather has always been a problem. A cheap, cold propellant rocket launcher using either compressed air from aqua-lung bottles or liquid carbon dioxide is admirably suited for hurling drift bottles to ranges of over 1,000 feet.
J.M. Zeigler, H.J. Tasha
openaire   +2 more sources

Challenges of digital innovations : a set-top box based approach [PDF]

open access: yes, 2014
The chapter analyses the challenges of digital technology for television audience measurement systems. First, the current state of audience measurement in Belgium is described.
Berte, Katrien, Evens, Tom
core   +2 more sources

Improved Method for Determining Voltage Unbalance Factor Using Induction Motors

open access: yesEnergies, 2022
This work shows an alternative method to determine the Voltage Unbalance Factor in a power grid by using both the mean value of the line voltages and Current Unbalance Factor in induction motors. Twenty unbalanced voltage points on three induction motors
Luis Guasch-Pesquer   +3 more
doaj   +1 more source

Alternate current measurement [PDF]

open access: yesProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1908
The lack of precision of measurements with alternate currents, as compared with those using direct currents, is mainly due to the relative sensitiveness of the instruments available for such tests. The fact that the turning moment acting on the moving system depends in one case on the square of the current and in the other on the first power of the ...
openaire   +3 more sources

PWM-based Flux linkage estimation for permanent magnet synchronous machines

open access: yesThe Journal of Engineering, 2019
Monitoring of rotor temperature in permanent magnet synchronous machines (PMSM) is of great importance as high temperature could cause partial or even irreversible demagnetisation of the permanent magnets (PMs).
Shuai Xiao, Antonio Griffo
doaj   +1 more source

Switching Techniques for Minimizing Current Measurement Noise in Integrated Single Shunt Power Conversion System With Common DC Link

open access: yesIEEE Access
This paper suggests a technique to reduce noise in DC current measurements within an integrated power conversion system, which includes a three-phase inverter and a full-bridge converter both utilizing single shunt resistors as current sensors. Typically,
Ju-An Kim, Yong-Gyu Cho, Hyeon-Gyu Choi
doaj   +1 more source

Double detected spin-dependent quantum dot

open access: yes, 2012
We study the dynamics of a spin-dependent quantum dot system, where an unsharp and a sharp detection scenario is introduced. The back-action of the unsharp detection related to the magnetization, proposed in terms of the continuous quantum measurement ...
Averin   +45 more
core   +1 more source

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