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78 articles for “UPS”
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Research ArticleOpen accessEvery word in the titleA Low Cost Design Solution - DSP Based Active Power Factor Corrector for SMPS/ UPS( Single Phase)Samia Pillai Pitchai, B. UmamaheswariAs per international agency regulation (IEC 1000-3-2/EN 61000-3-2) and market expectation, it is important to reduce current harmonics in the AC line current drawn by SMPS/ UPS connected to AC Mains as source and also it is desired by the user to deliver maximum power output by achieving unity power factor. To achieve the above objectives in SMPS/ UPS, APFC … …American Journal of Applied Sciences, Vol. 3, Issue 1 · 31 Jan 2006 · 6,896 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFAULT AND RELIABILITY ANALYSIS OF CARBON NANO TUBE FET SRAM IN THE PRESENCE OF SINGLE EVENT UPSETT. R. Rajalakshmi, R. SudhakarCarbon nano tube devices are considered as a better replacement for CMOS technology nowadays due to its decreased sizing and increased performance. Resistive open and bridging faults play vital role in the dynamic fault analysis. These faults are important since the number of interconnects have increased. In this study we discuss the effect of open and bridging defects along with … …American Journal of Applied Sciences, Vol. 11, Issue 8 · 28 May 2014 · 6,653 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Ethanol Addition in the Combustion Process During Warm-UPS and Half Open Throttle on Port-Injection Gasoline EngineBeny Cahyono, Rosli Abu BakarProblem statement: Ethanol is an alternative fuel with huge potential that can be used in gasoline engines. Addition of ethanol in fuel will affect the fuel properties, fuel properties change will affect the engine performance. Approach: To determine the effect of adding ethanol to gasoline engines, in this study are tested using gasoline, ethanol 10 and 20% ethanol. Results: Testing … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 1 · 28 Jan 2011 · 8,344 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Deploying the Flow Guide Vane in Upstream of Triangular Duckbill Weirs on the Efficiency of this Type of Weir in Laboratory ConditionsSayedeh Zahra Hosseini-Teshnizi, Manuchehr Heidarpour, Saeid Eslamian et al.One of the effective ways for the flow of water in low head water conditions is using triangular duckbill weirs. Regarding the high efficiency of these weirs in higher rate of flow discharge in constant head water conditions, the investigation about this type of weirs is greatly required. The present study is done on triangular duckbill weir with two different … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 2 · 27 Jun 2019 · 7,199 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleClimatic Severity Victims of Upstream Water Piracy Strongly Evidencing Inland Water-depletion Caused Global Warming vis-a-vis CoolingMiah M. Adel, Mahmood R. Hossain, Saiyeeda F. HossainSince the 80’s, the northwestern and the southwestern parts of the tropical Bangladesh located in the downstream Ganges basin have been having summer temperature above 109°F and winter temperature as low as 37°F. Every year people, particularly, the infants die from heat-and cold-related diseases and hospitals become packed-up with the victims of severe climatic condition. The objective of this research … …American Journal of Environmental Sciences, Vol. 10, Issue 2 · 15 Apr 2014 · 7,642 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAlzheimer’s Disease Prognosis is Captured by a Down-Upsized Incidence Poisson DistributionRamalingam ShanmugamAlzeimer disease is a daunting nightmare to both the medical and families of the patients. Tireless efforts are made by the medical researchers to treat Alzheimer’s patients. The Alzhiemer patients’ data provides clues about its prognosis and they can be identifies when the data are analyzed and understood correctly. The data analysis is a first step in the path to … …Current Research in Medicine, Vol. 4, Issue 2 · 4 Sep 2013 · 6,926 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDownstream Ecocide from Upstream Water PiracyMiah Muhammad AdelUpstream India and downstream Bangladesh share more than 50 international rivers. India has set up water diversion constructions in more than 50% of these rivers, the largest one being on the Bangladesh’s northwest upon the Ganges River, puts Bangladesh’s Gangetic ecosystem at stake. In some border rivers, India has set up groins on her side of river banks. Also, Indian … …American Journal of Environmental Sciences, Vol. 8, Issue 5 · 4 Sep 2012 · 9,067 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEnd Discharge Relationship for Free Overfall Affected by Upstream Bed Roughness and SlopeJaafar S. MaatooqThe experimental program of this paper was restricted to free vertical drop structure at the end of the rectangular channel. The roughness and slope of the bed of approach channel are the aim of this study to show their effects on End Depth Ratio (EDR). Three different roughness from smooth (n = 0.009) to rough (n = 0.019) with four-bed … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 5 Jun 2017 · 7,498 accessesView PDFCite
Research ArticleOpen accessIn the keywordsUninterruptible Power Supply Using Solar Rechargeable BatteryJ.C. Osuwa, E.C. IgwiroProblem statement: A 600 watts Uninterruptible Power Supply (UPS) that consists of an inverter operated with solar rechargeable battery has been constructed and characterized. Approach: An inverter of high switching frequency and high power handling, a sensor, an oscillator and other electronic devices were employed in the circuitry. Performance tests involved measurements of supply currents and voltages from the battery … …Physics International, Vol. 1, Issue 1 · 31 Mar 2010 · 7,412 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMonitoring System for Uninterruptible Power SupplyS.A.Z. Murad, M.N.Md. Isa, N.A. RahmanIn industrial process today, reliability of equipment is very important. Power supply must be able to cater the need of industrial process. In case of power failure, backup power supply system must be able to support the main process plant. This is to ensure smooth operation and product quality. In order to do this, uninterruptible power supply (UPS) system can … …American Journal of Applied Sciences, Vol. 4, Issue 3 · 31 Mar 2007 · 7,408 accessesView PDFCite