Results 141 to 150 of about 432 (184)

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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Germanium varistors

2013
http://archive.org/details ...
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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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Varistor control of inductive transients

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1992
It is shown that the varistor, a nonlinear resistor with current-voltage characteristics of the form i=ke/sup n/, can be used to achieve superior limitation of inductive transients over that obtainable with a simple diode, or with a diode plus additional linear resistance. To this end a transient analysis is made of the circuit composed of the inductor,
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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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Observation of an electrical breakdown at ZnO Schottky contacts in varistors

Journal of the European Ceramic Society, 2021
Benjamin Kaufmann
exaly  

Varistors

1991
M.F. Yan, H.K. Bowen
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Effect of ZnBi2O4 and Bi2O3 addition on the densification, microstructure, and varistor properties of ZnO varistors

Ceramics International, 2023
Hsing-I Hsiang, Chih-Cheng Chen, Chia-Chin Kao   +2 more
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