Results 31 to 40 of about 11,262 (263)

Synthesis of ZnO based nanopowders via a non-hydrolytic sol gel technique and their densification behaviour and varistor properties [PDF]

Processing and Application of Ceramics, 2010
Hexagonal nanocrystalline varistor grade ZnO particles with size 50 nm and the specific surface area of 28 m2/g have been prepared by non-aqueous gelation technique involving diethylene glycol and triethanolamine.
Shereef Anas, Poothayil Mukundan, Ayyappan M. Sanoj, Viswanathan R. Mangalaraja, Solaiappan Ananthakumar   +4 more
doaj  

A supercapacitor based enhancement technique for stand-alone surge protection circuits [PDF]

, 2013
With the International Technology Roadmap for Semiconductors predicting below-25nm feature-size VLSIs, powered by DC power supplies of less than 1V, protection against transients has become mandatory for modern electronic systems.
Fernando, Jayathu, Kularatna, Nihal
core   +2 more sources

Análisis Matemático de la Supresión de Impulsos Tipo Atmosférico en Sistemas de Distribución

Ingenio, 2021
Se realizó el estudio y análisis de la supresión de impulsos tipo atmosférico al pararrayo de un Sistema de Distribución Eléctrica,  basado en la comparación de resultados teóricos desarrollados con el software Matlab – Simulink y los experimentales ...
Josue Quimiz, Nathalie Guerra, Klever Carrión, David Cárdenas, Carlos Chávez   +4 more
doaj   +1 more source

Ultrahigh voltage-gradient ZnO-based varistor ceramics via hybrid cold sintering process/spark plasma sintering and post-annealing process

Journal of Advanced Ceramics
A high voltage gradient (Vg) of ZnO-based varistor ceramics is critical for realizing miniaturized and lightweight overvoltage protection devices. However, improving Vg of ZnO-based varistor ceramics through conventional high-temperature sintering ...
Shenglin Kang, Xuetong Zhao, Qi Wang, Jie Liang, Jing Guo, Xilin Wang, Guilai Yin, Lijun Yang, Ruijin Liao   +8 more
doaj   +1 more source

Study of the Electrophysical Properties of Composite Varistors Based on Zinc Oxide and Polymer (Polyaniline)

International Journal of Polymer Science, 2010
In this experimental work, current-voltage characteristics of composite varisrors prepared on the base of zinc oxide with different weight percentages of polyaniline and temperature dependence of the samples characteristics have been studied.
Sajedeh Mohammadi Aref, Hassan Bidadi, Shamestan Hasanli   +2 more
doaj   +1 more source

Efeito do Pr2O3 nas propriedades elétricas de varistores à base de SnO2 [PDF]

Cerâmica, 2003
A proposta deste trabalho foi o estudo e a obtenção de uma cerâmica densa à base de SnO2 dopada com CoO, Ta2O5 e diferentes concentrações de Pr2O3. Os sistemas apresentaram elevados valores de densidade relativa, e propriedades não ôhmicas.
L. G .P. Simões, M. O. Orlandi, A. L. Araujo, M. R. D. Bomio, E. R. Leite, E. Longo, J. A. Varela   +6 more
doaj   +1 more source

Electrical properties of ZnO varistors prepared by direct mixing of constituent phases [PDF]

, 2006
Varistor samples containing different amounts of constituent phases were prepared by direct mixing of constituent phases. Detailed electrical characterization was performed to explain the influence of minor phases (spinel and intergranular phases) on ...
Branković G., Branković Z., Žunić M.
core   +1 more source

Effect of Cr2O3 on properties of ZnO-Bi2O3 based high-voltage varistor ceramics

Cailiao gongcheng
ZnO-Bi2O3-Co2O3-NiO-Mn3O4-SiO2-Cr2O3 varistor ceramics were prepared by solid-phase sintering method.The effects of different doping amounts of Cr2O3 on the microstructure and electrical properties of ZnO varistor ceramics were investigated, and the ...
GUI Yanghai, TU Yuansheng, TIAN Kuan, GUO Huishi, HUANG Hai, ZHANG Xinhua   +5 more
doaj   +1 more source

Revisão: efeito dos metais doadores nas propriedades elétricas e microestruturais dos varistores cerâmicos à base de SnO2 Review: effect of donor metals on the electrical and microstructural properties of SnO2-based ceramic varistors

Cerâmica, 2008
O estudo da adição de dopantes trivalentes é uma das principais pesquisas na área de varistores. Vários autores têm buscado entender os efeitos destes dopantes nas propriedades elétricas e microestruturais destas cerâmicas eletrônicas.
M. M. Oliveira, J. H. G. Rangel, V. C. de Sousa, E. Longo, R. N. R. Filho   +4 more
doaj   +1 more source

Random manifolds in non-linear resistor networks: Applications to varistors and superconductors

, 2001
We show that current localization in polycrystalline varistors occurs on paths which are, usually, in the universality class of the directed polymer in a random medium.
A Donev, Ahuja R K, Alava M J, Bouchaud E, C E Musolff, Clarke D R, Cormen T H, Middleton A A, P M Duxbury, Porto M, Riedinger R, Roux S, Sahimi M, Seppälä E T, Stinchcombe R B   +14 more
core   +1 more source