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Microwave Sintering Technology for the Production of Metal Oxide Varistors
MRS Proceedings, 1990ABSTRACTA microwave sintering technology has been developed for the production of metal oxide varistors. The electrical properties (leakage current and non-linearity coefficient) of the microwave sintered devices were found to be comparable to those obtained for conventionally sintered varistors of identical composition.
G. McMahon +4 more
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Development of metal oxide varistor element for power systems
Proceedings of IEEE International Symposium on Industrial Electronics, 2002A highly nonlinear arrester can improve the insulation coordination of electrical substations and reduce the basic impulse level of power systems. Metal oxide varistors with zinc oxide as one of their constituents are used as advanced protective devices for power systems against transient overvoltages.
S.N. Roy +3 more
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Research on leakage current characteristic of metal oxide varistor
2017 1st International Conference on Electrical Materials and Power Equipment (ICEMPE), 2017MOA (Metal Oxide Arrester) has been widely used in the world because of its excellent nonlinearity, long-lasting anti-aging properties and excellent overvoltage protection performance. The performance degradation of the MOV occurs in the long-running process because of environmental reasons, so the online monitoring system for the MOA has a great ...
Xuni Rao +4 more
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Metal oxide varistor-A multijunction thin-film device
Applied Physics Letters, 1974The physical origin of the highly nonlinear current-voltage relation in metal oxide varistors is shown to be consistent with Fowler-Nordheim tunneling.
Lionel M. Levinson, H. R. Philipp
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Long-time polarization currents in metal-oxide varistors
Journal of Applied Physics, 1976The low-frequency (100–10−4 Hz) behavior of metal-oxide varistors is obtained from analysis of the charging and discharging currents which flow upon the application and removal of a step voltage. These results are compared to data for the complex dielectric constant ε=ε′−iε″ obtained using an ac bridge in the frequency range 101–10−1 Hz.
H. R. Philipp, Lionel M. Levinson
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Barrier voltage measurement in metal oxide varistors
Journal of Applied Physics, 1976A 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, 2022Reza Kheirollahi +4 more
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A new component - the metal oxide varistor suppressor
1972 IEEE Power Processing and Electronics Specialists Conference, 1972The 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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Grain Resistivity and Conduction in Metal Oxide Varistors
1986Metal 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, 1986Elmar Ziegler, Reinhard Helbig
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