Results 11 to 20 of about 1,951 (227)

Calculation model by Voronoi network and verification of zinc oxide varistor considering conduction mechanism

International Journal of Ceramic Engineering & Science
In this paper, a method to improve the performance of varistor with the help of computational model was presented and verified by experiments. Abstract This paper investigates the impact of the microstructure of zinc oxide varistor ceramics on their electrical properties.
Xiao Lei, Xin Ning, Peng Liu, Pengfei Meng, Yue Yin, Jingke Guo   +5 more
exaly   +2 more sources

Assessment of MOV Deterioration under Energized Conditions

Energies, 2020
Metal oxide varistors (MOVs) are widely used to protect electrical and electronic devices that are very vulnerable to surges due to the low insulation level of the equipment. MOVs deteriorate gradually due to manufacturing defects, mechanical and thermal
Sung-Wook Kim, Nam-Hoon Kim, Gyung-suk Kil   +2 more
doaj   +1 more source

Size effect on properties of varistors made from zinc oxide nanoparticles through low temperature spark plasma sintering [PDF]

, 2009
Conditions for the elaboration of nanostructured varistors by spark plasma sintering (SPS) are investigated, using 8-nm zinc oxide nanoparticles synthesized following an organometallic approach. A binary system constituted of zinc oxide and bismuth oxide
Angerer, Anselmi-Tamburini, Bartkowiak, Bernik, Beyer, Buscaglia, Catherine Elissalde, Chaim, Chaim, Chaim, Chen, Choi, Chung, Clarke, Clarke, de la Rubia, Drouet, Duran, Ellmer, Ezhilvalavan, Ezhilvalavan, Gao, Glot, Greuter, Guha, Gupta, Han, Hong, Huang, Kahn, Kahn, Kang Xue, Kobayashi, Lee, Lin, Liu, Look, Luo, Mishra, Monge, Morris, Olsson, Olsson, Olsson, Onreabroy, Onreabroy, Pillai, Singhal, Sonder, Wang, Wang, Wong, Xu, Zhijian Shen   +53 more
core   +2 more sources

FDTD Electromagnetic and Thermal Simulation of a Metal Oxide Varistor Element Considering the Temperature Dependence of Its Resistivity

Electricity, 2021
Electromagnetic fields and the heat of a metal oxide varistor (MOV), in which a lightning impulse current flows, are calculated using the finite-difference time-domain (FDTD) method.
Tokuya Tanaka, Yoshihiro Baba, Yoshimasa Tsujimoto, Naoyuki Tsukamoto   +3 more
doaj   +1 more source

On the Computation of the Voltage Distribution along the Non-Linear Resistor of Gapless Metal Oxide Surge Arresters

Energies, 2018
The voltage distribution along the non-linear resistance of metal oxide surges is of great importance for their proper operation, since the non-uniform potential distribution results in higher thermal stresses of the varistor discs near the high voltage ...
Christos A. Christodoulou, Vasiliki Vita, Valeri Mladenov, Lambros Ekonomou   +3 more
doaj   +1 more source

Preliminary study on pulse width adjustable pulse generator based on the magnetic switch and metal-oxide varistor

AIP Advances, 2018
The pulsed power technology has been applied to many defense and industrial fields. Different applications have different demands on the parameters of the pulsed power systems. However, the parameters of the current pulsed power systems are usually fixed
Yancheng Cui, Chengyu Shi, Hanwu Yang, Jingming Gao, Song Li, Qilin Wu   +5 more
doaj   +1 more source

Case Study about the Energy Absorption Capacity of Metal Oxide Varistors with Thermal Coupling

Energies, 2019
Metal oxide varistors are applied today inside modern surge arresters for overvoltage protection for all voltage levels. Their main issue is the thermal activation of their crossing current, which could lead to complete destruction by thermal runaway ...
Flaviu Mihai Frigura-Iliasa, Sorin Musuroi, Ciprian Sorandaru, Doru Vatau   +3 more
doaj   +1 more source

Testing of High Voltage Surge Protection Devices for Use in Liquid Argon TPC Detectors [PDF]

, 2014
In this paper we demonstrate the capability of high voltage varistors and gas discharge tube arrestors for use as surge protection devices in liquid argon time projection chamber detectors.
Asaadi, J., Conrad, J. M., Gollapinni, S., John, J. M. St., Jones, B. J. P., Jostlein, H., Strauss, T., Wolbers, S., Zennamo, J.   +8 more
core   +2 more sources

Analysis of Metal Oxide Varistor Arresters for Protection of Multiconductor Transmission Lines Using Unconditionally-Stable Crank–Nicolson FDTD

Energies, 2020
Surge arresters may represent an efficient choice for limiting lightning surge effects, significantly reducing the outage rate of power lines. The present work firstly presents an efficient numerical approach suitable for insulation coordination studies ...
Erika Stracqualursi, Rodolfo Araneo, Giampiero Lovat, Amedeo Andreotti, Paolo Burghignoli, Jose Brandão Faria, Salvatore Celozzi   +6 more
doaj   +1 more source

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