Results 21 to 30 of about 133,121 (127)

Analisis Karakteristik Elektrik Zno Terdoping Cr2O3 Untuk Aplikasi Varistor Tegangan Rendah [PDF]

, 2012
ZnO is one of the main ingredients of making varistor can be used as a protective device to protect electronic and electrical equipment from the dangers of impulse over voltage.
Asmi, Dwi, Sitorus, Henry B. H., Sandaran, Saka   +2 more
core   +1 more source

Varistores à base de SnO2: estado da arte e perspectivas [PDF]

Cerâmica, 2000
Este trabalho descreve a história dos varistores à base de SnO2. Nele são apresentadas as principais características deste novo sistema varistor e uma comparação direta com o sistema tradicional à base de ZnO, estabelecendo as vantagens e desvantagens. O
P. R. Bueno, M. M. Oliveira, M. R. Cassia-Santos, E. Longo, S. M. Tebcherani, J. A. Varela   +5 more
doaj   +1 more source

Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage [PDF]

Journal of Advanced Dielectrics, 2014
C–V characteristics of ZnO-based ceramic structures used in manufacturing high-voltage and low-voltage varistors of different chemical compositions and manufacturing techniques have been investigated. A correlation between the intensity of electric field
A. S. Tonkoshkur, I. V. Gomilko, A. Yu Lyashkov   +2 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

KARAKTERISASI VARISTOR ZnO-Bi203-CuO

, 2005
KARAKTERISASI VARISTOR ZnO-Bi203-CuO. Untuk mengetahui peran CuO dalam pembentukan varistor, pembuatan dan karakterisasi varistor ZnO-Bi2O3-CuO telah dilakukan.
Ariwahjoedi, Bambang, Yamin, M, Hidayat, Saeful, Syarif, Dani Gustaman   +3 more
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

Modeling of electrical transport in Zinc Oxide varistors [PDF]

Advances in Radio Science, 2014
The electrical transport in zinc oxide (ZnO) varistors is analyzed using microstructural material modeling. The fully three dimensional current distribution is computed by means of a nonlinear equivalent circuit model representing the assembly of current
K. Bavelis, E. Gjonaj, T. Weiland
doaj   +1 more source

Desenvolvimento de varistores à base de SnO2 para aplicação em redes de alta tensão Development of SnO2-based varistors for high voltage application

Cerâmica, 2006
Varistores à base de SnO2 foram preparados pelo processo convencional de mistura de óxidos. As amostras foram sinterizadas a 1250 °C por 2 h. Os difratogramas obtidos por difração de raios X e as análises por microscopia eletrônica de varredura ...
M. M. Oliveira, J. H. G. Rangel, V. C. de Sousa, E. R. Leite, E. Longo, P. R. Bueno, J. A. Varela   +6 more
doaj   +1 more source

Microstructure and electrical properties of Y(NO3)3·6H2O-doped ZnO-Bi2O3-based varistor ceramics

, 2011
Y(NO3)3·6H2O-doped ZnO-Bi2O3-based varistor ceramics were prepared using a solid reaction route. The microstructure, electrical properties, degradation coefficient(DV), and dielectric characteristics of varistor ceramics were studied in this paper.
Xu, D.(frank@ujs.edu.cn), Dong Xu, Juan Yang, Yuan, Hongming, Yang, Juan, Hongming Yuan, Lin, Yuanhua, Yuanhua Lin, Xu, Dong, Cheng, Xiaonong, Xiaonong Cheng   +10 more
core   +1 more source

Microstructural evaluation of rare-earth-zinc oxide-based varistor ceramics

Materials Research, 2005
Zinc oxide varistors are nonlinear voltage dependent ceramic resistors used to suppress and limit transient voltage surges. The work reported in this paper involves the relationship between microstructural characteristics and the varistor performance of ...
José Geraldo de Melo Furtado, Luiz Antônio Saléh, Eduardo Torres Serra, Glória Suzana Gomes de Oliveira, Maria Cecília de Souza Nóbrega   +4 more
doaj   +1 more source