Results 81 to 90 of about 4,264 (203)

Control of Varistor Voltage by Grain-size Control of Bi-added ZnO Varistors

IOP Conference Series: Materials Science and Engineering, 2011
Relationship between the grain size of ZnO and the amounts of Bi and Sb for Bi-Ba-Sb-Co-Mn-added ZnO was investigated. The amount of Bi at which the grain size of ZnO became the maximum shifted to the notably larger one by adding small amount of Sb such as 0.01 mol%.
Ai Fukumori, Takayuki Watanabe, Yuuki Sato, Shinzo Yoshikado   +3 more
openaire   +1 more source

Path Integral Approach to Strongly Nonlinear Composite

, 2000
We study strongly nonlinear disordered media using a functional method. We solve exactly the problem of a nonlinear impurity in a linear host and we obtain a Bruggeman-like formula for the effective nonlinear susceptibility.
B. K. Chakrabarti, D. A. G. Bruggeman, D. J. Bergman, D. Stroud, G. A. Niklasson, H.-C. Lee, H.-C. Lee, H.-C. Lee, J. P. Straley, L. Gao, L. Sali, L. Sali, M. Barthélémy, M. Osofsky, Marc Barthélémy, O. Levy, O. Levy, P. M. Hui, P. M. Hui, P. M. Hui, P. M. Hui, P. Ponte Castañeda, P. Ponte Castañeda, P. Ponte Castañeda, P. Ponte Castañeda, R. Blumenfeld, R. Einziger, R. Landauer, R. R. Tremblay, W. M. V. Wan, X. C. Zeng, X. C. Zeng, X. Zhang, Y. Meir, Y.-P. Pellegrini, Y.-P. Pellegrini   +35 more
core   +3 more sources

Photopyroelectric spectrum of MNO2 Doped Bi2O3 - TiO2 - ZnO ceramic combination [PDF]

, 2008
Photopyroelectric spectroscopy is used to study the energy band-gap of the ceramic (ZnO 0.25 Bi2O3 +0.25 TiO2 + x MnO2), x = 0 - 1.3 mol%, sintered at isothermal temperature 1190 and 1270°C for 2 hours in air.
Hashim, Mansor, Mat Yunus, Wan Mahmood, Rizwan, Zahid, Shaari, Abdul Halim, Zakaria, Azmi   +4 more
core  

Lightning current tests on radars and similar structures [PDF]

, 2010
A lightning stroke presents a real challenge due to its potential to cause irreversible damage on electronics. Future systems are packaged in composite shielding materials, which give little or no protection with respect to the electromagnetic fields ...
Blaj, M.A., Buesink, F.J.K., Damstra, G.C., Leferink, F.B.J.   +3 more
core   +2 more sources

Growth Techniques for Bulk ZnO and Related Compounds

, 2011
ZnO bulk crystals can be grown by several methods. 1) From the gas phase, usually by chemical vapor transport. Such CVT crystals may have high chemical purity, as the growth is performed without contact to foreign material.
Galazka, Zbigniew, Ganschow, Steffen, Klimm, Detlef, Schulz, Detlev, Uecker, Reinhard   +4 more
core   +1 more source

Influence Mechanism of Micro Grain-boundary Parameters to the Electrical Properties of ZnO Varistor

工程科学与技术
ZnO varistors exhibit excellent nonlinear voltage–current characteristics and substantial energy capacity, enabling them to absorb impulse energy during power system overvoltages and thus protect the electrical equipment.
Pengfei MENG, Jingke GUO, Xiao LEI, Lei WANG, Bingbing ZHANG, Kui MIAO, Jun HU   +6 more
doaj  

Effect of MnO2${ ext{MnO}}_{2}$ doping on AC aging characteristics of varistor in arrester

International Journal of Ceramic Engineering & Science
As the core component of lightning arrester, the performance of ZnO varistor directly affects the protection level of lightning arrester. Under the action of long‐term AC voltage, the varistors are prone to AC aging, which leads to the deterioration of ...
Zhengzheng Fu, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Yiping Jiang, Pengfei Meng, Jingke Guo, Yue Yin   +8 more
doaj   +1 more source

Circuit protection devices for transient suppression [PDF]

The Electromer Corporation has developed a series of transient voltage suppression components based on a patented, specially formulated PolyClamp (trademark) material.
Childers, Richard
core   +1 more source

Study of the Effect of WO3 and Bi2O3 on the Microstructure and Electrical Properties of A TiO2 based Varistor

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, S. Begum, I. Ahmad, I. R. Daud, S. Gholizadeh   +4 more
doaj   +1 more source

دراسة التركيب النسيجي لأجسام سيراميكية من أكسيدي الزنك و السيريوم ((Microstructure study of Ce-doped – Ceramics containing Zinc and Cerium oxides))

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