Results 121 to 130 of about 116,272 (167)

Pulsed-Current Distribution in Electromagnetic Rail Launchers

IEEE Transactions on Instrumentation and Measurement, 2020
This article deals with the measurement of current distribution through the rail cross section of an electromagnetic rail launcher. A measurement approach based on a loop system magnetically coupled to the launcher that is placed along the rails is proposed.
Gabriele Bandini, Mirko Marracci, Gianluca Caposciutti, Bernardo Tellini   +3 more
openaire   +1 more source

Current Distribution and Current Efficiency in Pulsed Current Plating of Nickel

Journal of The Electrochemical Society, 1996
A mathematical model is presented to obtain the current distribution and current efficiency on a rotating disk electrode under controlled current condition. The calculated results compare well with experiments performed using a nickel/nickel sulfate system in the presence of boric acid.
Kwak, Seong-Il, Jeong, Kyeong-Min, Kim, Su-Kywong, Sohn, Hun-Jun   +3 more
openaire   +2 more sources

Research on the magneto-optic current sensor for high-current pulses

Review of Scientific Instruments, 2008
A new magneto-optic current sensor with a dual-orthogonal configuration is proposed and demonstrated, which can resolve the problem which value of high-current pulses is ambiguous from the Faraday rotation in the conventional magneto-optic current sensor.
Xiangyang, Deng, Zeren, Li, Qixian, Peng, Jun, Liu, Jianhua, Tian   +4 more
openaire   +2 more sources

Bottom Currents Measured with a Pulse-to-Pulse Coherent Sonar

OCEANS '87, 1987
The performance of a High Resolution Current Profiler (HRCP) using pulse-to-pulse coherent Doppler technique rather than conventional incoherent Doppler (ADCP) technique is discussed. The HRCP (300 KHz) was deployed on the bottom of the North Sea (at about 100 m depth) looking upwards.
B. Hackett, A. Lohrmann, L. Roed
openaire   +1 more source

Pulsed eddy current thermography: system development and evaluation

Insight - Non-Destructive Testing and Condition Monitoring, 2010
There is a need for fast and efficient techniques to inspect engineering structures and complex components such as aircraft turbine blades to identify potential sites of failure. Pulsed eddy current (PEC) thermography is a new inspection technique which allows the user to capture the eddy current distribution in a component or structure using infrared ...
Wilson J, Tian GY, Abidin IZ, Yang SX, Almond D   +4 more
openaire   +3 more sources

The polarographic current “constant” in pulse polarography,

Journal of Electroanalytical Chemistry, 1977
Abstract The equations of Fonds, Brinkmann and Los allow a more exact theoretical evaluation of pulse polarographic phenomena than it is possible with their counterparts in classical polarography. The possibility of deducing a polarographic current constant of some sort, similar to the Lingane-Loveridge equation, is studied.
openaire   +1 more source

Pulsed Eddy Current Thermography and Applications

2011
In this paper we report on the application of the pulsed eddy current thermography inspection technique to the detection and quantification of defects in a variety of materials. After introducing the appropriate modelling and simulation techniques an overview of a typical PEC thermography system setup is provided.
Tian, GY, Wilson, John; id_orcid 0000-0003-2139-1250, Cheng, L, Almond, Darryl P, Kostson, Erik, Weekes, Benjamin   +5 more
openaire   +2 more sources

Pulse by pulse current limiting technique for SPWM inverters

Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475), 1999
Impactive current overshoot is usually observed in SPWM inverter when impulsive loads are loaded. So far, several methods have been proposed to solve this problem, such as mean current feedback control or temporarily pulling down the voltage reference. Nevertheless, they both have shortcomings. This paper introduces a pulse by pulse current limiting (i.
null Yang Yinfu, null Liu Jingbo, null Zhou Dangsheng   +2 more
openaire   +1 more source

Restoring rectangular pulses of stimulation current

Electroencephalography and Clinical Neurophysiology, 1966
Abstract The extensively used rectangular pulses for electrical stimulation of laboratory animals are greatly distorted when applied to thin wire electrodes. The large current densities present at the electrode tips cause a capacitive behaviour of the metal-electrolyte interface.
openaire   +2 more sources

Pulsed-Current Plating

1994
Abstract Pulsed-current plating can be defined simply as metal deposition by pulsed electrolysis, which involves using interrupted direct current to electroplate parts. This article discusses the advantages and limitations of pulsed-current plating and provides information on the process principles and control, solution composition ...
openaire   +1 more source