Results 201 to 210 of about 11,262 (263)
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Degradation in ZnO varistors

Journal of Physics: Condensed Matter, 1993
Among the mechanisms suggested to account for degradation of varistor materials, ion migration has strong support. Mobile, positively charged ions in the depletion layer would be the key element in degradation. In this context, the authors discuss the consequences of an electrical stressing on the current-temperature characteristic of a comment ...
M S Castro, M A Benavente, C M Aldao
openaire   +1 more source

Thermal breakdown in ZnO-varistor ceramics

Physica Status Solidi (a), 1980
Thermal breakdowns representing an essential mechanism for the lifetime limitation of ZnO-varistor ceramics are characterized with respect to the parameters of the breakdown point (especially breakdown temperature Tb) (for 21 °C as ambient temperature: Tb = 174 °C).
W. Brückner, W . Moldenhauer, D. Hinz
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Structural and electrical properties of ZnO–V2O5–TiO2–Co2O3–MnO varistor ceramics with low sintering temperature

Journal of Materials Science: Materials in Electronics, 2023
Tianyu Li   +5 more
semanticscholar   +1 more source

New low-voltage varistor composites

Journal of Materials Science, 1996
New varistor-type polymer composites for low-voltage application have been developed. The filler is made of commercially available doped ZnO-varistor powder. The polycrystalline filler particles act as varistors due to their typical grain-boundary structure.
J. Glatz-Reichenbach   +4 more
openaire   +1 more source

Effect of La2O3 doping on microstructure and electrical properties of flash-sintered ZnO-Bi2O3 varistor

Journal of Materials Science: Materials in Electronics, 2022
Mengyang Shi   +8 more
semanticscholar   +1 more source

Theory Of ZnO Varistors

MRS Proceedings, 1981
The theory of ZnO varistors has evolved along with the increasingly detailed experimental description [1-2]. The extreme nonlinearity in the currentvoltage curves naturally led the early investigators to suggest the well-known nonlinear mechanisms, such as space-charge limited currents or electron tunneling. Later experiments made these first proposals
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ZnO Varistors for Transient Protection

IEEE Transactions on Parts, Hybrids, and Packaging, 1977
ZnO varistors are novel ceramic semiconductor devices used for protection of electronic equipment against transient overvoltages due to switching surges or lightning. This article describes the microstructure, circuit behavior, and operation of ZnO varistors.
L. Levinson, H. Philipp
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The effect of ZnO particle size on the dynamic mechanical, thermal, and dielectric properties of ZnO varistor-Epoxy composites

Journal of Materials Science: Materials in Electronics, 2022
H. Tian   +6 more
semanticscholar   +1 more source

ChemInform Abstract: Varistor Ceramics

ChemInform, 1999
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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