Evaluation of an Electronic Load for Pulsed Current Characterization of Power Semiconductors

2010 ◽  
Author(s):  
Timothy E. Griffith
Keyword(s):  
Pulsed Current ◽  
Power Semiconductors ◽  
Electronic Load

Characterization of Solid Tin Target for Gas Discharges Produced EUV Plasmas

2007 ◽  
Vol 121-123 ◽  
pp. 885-888
Author(s):  
C.H. Zhang ◽  
S. Katsuki ◽  
J.G. Shi ◽  
H. Horita ◽  
T. Namihira ◽  
...  
Keyword(s):  
Electric Energy ◽  
Target Material ◽  
Pulsed Current ◽  
Gas Discharges ◽  
Pinch Plasma ◽  
Euv Emission ◽  
Pinhole Imaging ◽  
Background Gas ◽  
Z Pinch

In the development of our Z-pinch plasma EUV source, xenon (Xe) is used for the background gas discharges, and a solid tin (Sn) rod is used as target material due to its potential of high convention efficiency (CE) from input electric energy to EUV radiation [1, 2]. The Z-pinch plasma was driven by pulsed current with amplitude of 30 kA and pulse duration of 110 ns. Pinhole imaging, EUV spectrograph and in-band EUV energy monitor were used to characterize the EUV emission from the Z-pinch discharge. The experimental analyses have demonstrated the CE was as high as 3% [3].

scholarly journals Design and Implementation of a Photovoltaic Characterization Platform at FaST

2021 ◽  
Vol 1 ◽  
Author(s):  
Moudjibatou Afoda ◽  
N’detigma Kata ◽  
Dambé Douti ◽  
Hodo-Abalo Samah ◽  
Séidou Maiga
Keyword(s):  
Weather Conditions ◽  
External Factors ◽  
Added Value ◽  
Additional Information ◽  
Pv Module ◽  
Rigorous Study ◽  
Sub Saharan ◽  
Photovoltaic Characterization ◽  
Electronic Load

The site that houses the FaST faces high dusty winds and considerable temperature variation. Weather conditions such as solar radiation, temperature, and wind speed greatly affect the performance of PV modules. But the data from PV equipment manufacturers do not allow for proper sizing. Therefore, a rigorous study is needed to find the most suitable PV module technology for the study area. For this purpose, platforms for the acquisition of meteorological parameters and module characterization are indispensable. This platform project at FaST will serve training and pedagogy because its configuration will allow master and bachelor students to carry out practical work, to carry out studies on new cell technologies under the influence of external factors specific to the sub-Saharan zone and will bring an added value by providing additional information on real conditions and especially the influence of local external factors. Our study consisted first of all in the realization of the platform on the roof of the FaST, then in the design and the programming of a module of acquisition of the measured parameters on the basis of the Arduino microcontroller card and finally in the test of characterization of the modules used for the platform thanks to an electronic load on the basis of MOSFET of power controlled by a microcontroller that we realized.

NiMo Nanoparticles Electrodeposited by Pulsed Current and Their Catalytic Properties for Hydrogen Production

2013 ◽  
Vol 16 (3) ◽  
pp. 177-182 ◽  
Author(s):  
Savidra Lucatero ◽  
Gabriel Tamayo ◽  
Diego Crespo ◽  
Ernesto Mariño ◽  
Marcelo Videa
Keyword(s):  
Pulse Current ◽  
Catalytic Properties ◽  
Unit Area ◽  
Catalytic Performance ◽  
Pulsed Current ◽  
Pulse Time ◽  
Current Pulses ◽  
Mo Content ◽  
High Instability

The electrocatalytic activity of NiMo nanoparticles (NPs) fabricated by means of current pulses from a binary electrolyte was characterized using cyclic voltammetry. The pulse current density, jpulse, was varied in the range of 7 to 430 mA/cm2, whereas the pulse time, tpulse, was kept constant at two seconds. Mean NP size, Dmean, ranged within 27 and 38 nm at jpulse values between 15 and 140 mA/cm2; with Dmean increasing as jpulse was higher. NP dispersion (i. e., number of objects per unit area of substrate) was lower when jpulse values were also low (15 and 35 mA/cm2), which showed consistency with a promoted nuclei formation and prolonged NP growth at higher jpulse values. An improved catalytic performance for hydrogen evolution was determined upon increasing jpulse in the range of 7 to 70 mA/cm2 and remaining practically unvaried at higher jpulse values. The electrosynthesis of two distinct catalytic materials was indicated by electrochemical characterization of deposits; the material with greatest catalytic activity also showed high instability, causing a dramatic decay (~80%) in the activity after two consecutive cycles of operation. Ni and Mo content in electrodeposits were both sensitive to variations in jpulse.

Characterization of microstructure and mechanical properties of continuous and pulsed current gas tungsten arc welded superaustenitic stainless steel

2015 ◽  
Vol 30 (10) ◽  
pp. 1727-1746 ◽  
Author(s):  
K. Devendranath Ramkumar ◽  
Ayush Choudhary ◽  
Shivang Aggarwal ◽  
Anubhav Srivastava ◽  
Tadikonda Harsha Mohan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Pulsed Current ◽  
Superaustenitic Stainless Steel ◽  
Gas Tungsten Arc ◽  
Microstructure And Mechanical Properties ◽  
Gas Tungsten ◽  
Image Position

Abstract

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