Results 141 to 150 of about 477 (182)

Photoconduction of ZnO-Bi2O3 varistors

Journal of Materials Science Letters, 1989
Zinc oxide (ZnO) ceramics with a few mol % Bi203, CoO, MnO, Sb203, etc., as additives exhibit a high non-ohmic property in their voltage-current characteristics [1, 2], and therefore they are called varistors and are widely used for surge protection against transient voltage and powder overload [3].
T. Sekiya, A. Tsuzuki, S. Kawakami, Y. Torii   +3 more
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Varistor versus Environment: Winning the Rematch

IEEE Transactions on Power Delivery, 1986
An unusual case of difficult application of surge protective devices was solved by field measurements with retrofit of protective devices suitable for the particular environment. Onsite measurements indicated that capacitor switching transients were causing excessive current surges in the varistors and fuses protecting the input to a thyristor motor ...
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The physics of zinc oxide varistors

Journal of Applied Physics, 1977
This paper presents a physical description of the action of ZnO varistors, which are complex ceramic bodies of ZnO grains sintered in an oxide flux; their conductivity is very low at low voltage, but becomes high after a certain breakdown voltage is reached. It is found that depletion layers in the ZnO adjacent to the intergranular layers of oxide flux
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Modeling and Simulation of Varistors

2014
Diese Arbeit befasst sich mit verschiedenen Problemen im Zusammenhang mit Varistoren und Mikrovaristoren, welche dank ihrer außergewöhnlichen, nichtlinearen elektrischen Leitfähigkeit zur Unterdrückung transienter Überspannungen eingesetzt werden. Diese Arbeit ist vor allem dadurch motiviert, dass man zum einen das Verhalten von Überspannungsableitern ...
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Germanium varistors

2013
http://archive.org/details ...
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Significantly enhanced varistor properties of CaCu3Ti4O12 based ceramics by designing superior grain boundary: Deepening and broadening interface states

Journal of Materials Science and Technology, 2022
Zhuang Tang, Zhiyao Fu, Ze Lian
exaly  

Spinel Phases in ZnO Varistors

Physica Status Solidi (a), 1980
K.-H. Bäther, D. Hinz, N. Mattern, M. Bitterlich, W. Brückner   +4 more
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varistor, n.

2023
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Varistors

1991
M.F. Yan, H.K. Bowen
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Change of Varistor Voltage of Metal-oxide Varistor Influenced by Impulse Currents

IEEJ Transactions on Power and Energy, 2015
Naoyuki Tsukamoto, Masaru Ishii
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