Results 151 to 160 of about 235 (182)

Barrier voltage measurement in metal oxide varistors

Journal of Applied Physics, 1976
A combination of electrical and ceramic microstructural data has been used to determine the voltage drop across the ZnO-intergranular barrier in some simple and multicomponent ZnO-based varistors at the onset of high non-Ohmicity. The data are obtained by measuring the varistor breakdown field (V/mm) and average grain size of the conductive ZnO matrix ...
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Investigation on Metal Oxide Varistors in DC Circuit Breakers

IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, 2022
Reza Kheirollahi, Charlie Dang, Shuyan Zhao, Hua Zhang 0022, Fei Lu 0001   +4 more
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Nano-Enabled Metal Oxide Varistors for Surge Protection

2008 IEEE International Power Modulators and High-Voltage Conference, 2008
Commercial metal oxide varistor (MOV) devices provide a combination of high voltage, peak current, pulse energy absorption, and fast response speed. The non-uniformity and defects, however, may lead to relatively low voltage and energy dissipation, high leakage, low reliability and mechanical cracking.
Daniel Tan, Karim Younsi, Yingneng Zhou, Yang Cao, Patricia Irwin   +4 more
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A new component - the metal oxide varistor suppressor

1972 IEEE Power Processing and Electronics Specialists Conference, 1972
The paper deals with the novel aspects of a newly developed transient voltage suppressor. Details of its operation, fabrication and characterization are given. Its performance is compared against the more familiar devices currently used for transient voltage protection including devices such as spark gaps, zeners and selenium suppressors.
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Sintering and microstructural development of metal oxide varistor ceramics

Materials Research Bulletin, 1993
Anomalous retardation of the sintering kinetics of ZnO with addition of Bi[sub 4]Ti[sub 3]O[sub 12] (BIT) and a low voltage varistor composition containing ZnO, BIT, Co[sub 3]O[sub 4] and Mn[sub 2]O[sub 3] in the temperature interval between 780 and 850 C was investigated.
D. Makovec, D. Kolar, M. Trontelj
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Grain Resistivity and Conduction in Metal Oxide Varistors

1986
Metal oxide varistors are ceramic devices with highly nonlinear current-voltage characteristics similar to back-to-back Zener diodes.1−4 Typical I-V characteristics for a metal oxide varistor at 77 K and for a small range of temperatures near 300 K are shown in Fig. 1. They are produced by sintering ZnO powder together with small amounts (1 to 10 mole %
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Der Metall‐Oxid‐Varistor (MOV)

Physik in unserer Zeit, 1986
Elmar Ziegler, Reinhard Helbig
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Simplified Thermal Computation of a Metal Oxide Varistor Element under a Lightning Impulse Current Injection

IEEJ Transactions on Electrical and Electronic Engineering, 2021
Yoshihiro Baba
exaly  

Conduction mechanisms in metal oxide varistors

Journal of Solid State Chemistry, 1975
Lionel M. Levinson, H.R. Philipp
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Metal Oxide Varistors

Annual Review of Materials Research, 1987
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