Results 91 to 100 of about 2,070 (218)
Influence of spinel phase composition on ZnO varistors properties
, 1998 The method of directed synthesis of the constituent phases (DSCP) was applied to investigate the influence of spinel phase composition on characteristics of ZnO varistors.
Uskoković, D +3 more
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PROCESSING AND CHARACTERIZATION OF LOW-VOLTAGE VARISTORS
, 1994 ZnO seed particles and Cr2O3 were used in this study to control the microstructure of ZnO varistors. The seed particles were prepared by adding 1.0 mol % BaO to ZnO. The powder was then calcined at 800-degrees-C for 2 h, pressed into pellets and sintered
Longo, Elson +3 more
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مجلة المختار للعلوم, 2004 للسيراميك استخدامات عديدة علي نطاق واسع في مجال الكهرباء (الالكترونيات). ويتسع مدى هـذه الاستخدامات ليشمل الوقاية من خطر الجهد باستخدام الفارستور (Varistors) إلى مقاومات الفارستور (Varistors) ذات درجة الحرارة الموجبة إلى العوازل السيراميكية ...
D. E. Ibrahim, Osama Desouky
doaj +1 more source
Electrical characterization and modeling of varistors
In this work, a generalized experimental methodology was developed for the electrical characterization of metal oxide varistors and for analyzing their behavior under DC and AC voltages of various frequencies (45 Hz – 1 kHz) and under electromagnetic ...
Staikos, Evangelos +1 more
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Low-temperature Sintering of Zinc Oxide Varistors
, 1990 High-field varistors in the system ZnO-CoO-MnO-Bi2O3 were fabricated using powders prepared by a previously developed coprecipitation process. Following calcination, the powders were compacted and densified by conventional pressureless sintering at ...
Voigt, James A. +3 more
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Preparation of ZnO-based varistors by the sol-gel technique
, 1994 ZnO-based varistors consisting of 96 mol% ZnO and 4 mol% additive oxides (Bi2O3, Sb2O3, NiO, Co2O3, MnO and Cr2O3) have been prepared. Four different procedures have been applied to obtain the starting powder mixture.
Österlund, Ragnar +4 more
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Journal of Mechanical Engineering and Sciences, 2014 Titanium dioxide (TiO2) varistors doped with tungsten oxide (WO3) and bismuth oxide (Bi2O3) were investigated. The microstructure and electrical characterization were studied, where the effects of different concentrations of WO3 and a fixed amount of ...
Z. Kothandapani +4 more
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Electrical engineering & Electromechanics, 2019 In the testing laboratories of Ukraine, there is no high-voltage equipment of the necessary energy for testing surge arresters for explosion safety, which does not allow to estimate this indicator at the stage of development of prototypes.
Yu. N. Shumilov, V. I. Bondarenko
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Microwave Sintering Technology for the Production of Metal Oxide Varistors
, 1990 A microwave sintering technology has been developed for the production of metal oxide varistors. The electrical properties (leakage current and non-linearity coefficient) of the microwave sintered devices were found to be comparable to those obtained for
A. Pant +4 more
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Effects of Dopants and Processing Parameters on the Properties of ZnO-V2O5-Based Varistors Prepared by Powder Metallurgy: A Review. [PDF]
Materials (Basel), 2023 Lungu MV.
europepmc +1 more source