Results 11 to 20 of about 477 (182)

Influence of ambient temperature on electrical properties of varistor-positor structure

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2022
Recently, the combined two-layer structure based on varistor ceramics and polymer posistor nanocomposites with carbon filler (known as PolySwitch resettable fuses) has been seen as one of the promising elements for protecting electrical circuits from ...
Alexander Ivanchenko, Alexander Tonkoshkur   +1 more
doaj   +1 more source

Micro-Degradation Characteristics and Mechanism of ZnO Varistors under Multi-Pulse Lightning Strike

Energies, 2020
In view of the problem that ZnO varistors are often subjected to thermal breakdown and deterioration due to lightning strikes in low-voltage power distribution systems, this article used a 8/20 µs multi-pulse surge current with a pulse time interval of ...
Chunlong Zhang, Hongyan Xing, Chunying Li, Ran Cai, Dongbo Lv   +4 more
doaj   +1 more source

Exploring the global publications on varistors using the Scopus database through a bibliometric analysis

Journal of Asian Ceramic Societies, 2022
The global increase in electrical device consumption has escalated the demand for excellent surge protectors. As a state-of-the-art technology, varistor has received considerable attention due to its outstanding versatility and wide range of applications.
Muhamad Syaizwadi Shaifudin, Wan Mohamad Ikhmal Wan Mohamad Kamaruzzaman, Malia Athirah Badruddin, Abdul Muiz Aniq Aiman Mohd Suhaimi, Nursabrina Amirah Mohd Nasir, Nur Aiman Syafiq Mohd Hamidi, Wan Rafizah Wan Abdullah, Oon Jew Lee, Mohd Sabri Mohd Ghazali   +8 more
doaj   +1 more source

Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage [PDF]

Journal of Advanced Dielectrics, 2014
C–V characteristics of ZnO-based ceramic structures used in manufacturing high-voltage and low-voltage varistors of different chemical compositions and manufacturing techniques have been investigated. A correlation between the intensity of electric field
A. S. Tonkoshkur, I. V. Gomilko, A. Yu Lyashkov   +2 more
doaj   +1 more source

Electrical properties of structures based on varistor ceramics and polymer nanocomposites with carbon filler [PDF]

Journal of Advanced Dielectrics, 2019
The characteristics of a two-layer structure on the basis of the layers of varistor ceramics and polymeric PPTC nanocomposite being in thermal contact for the purpose of using it as a limiter of constant voltage and long-term varying electrical ...
A. S. Tonkoshkur, A. V. Ivanchenko
doaj   +1 more source

Factors Influence on Electrophysical Parameters of the Composite Varistors

Nauka ta progres transportu, 2023
Purpose. Evaluation influence structural state polymer phase on the response voltage and coefficient nonlinearity of a multilayer varistor based on zinc oxide. Methodology. Zinc oxide consisted of 97% zinc oxide and 3% total oxides of Bi2O3, Co3O4, MnO2,
Sh. M. Ahadzade, I. A. Vakulenko, Kh. Asgarov   +2 more
doaj   +1 more source

Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass [PDF]

Science of Sintering, 2021
The influence of sintering time on the microstructure and electrical properties of ZnO-CoO-SLS (soda lime silica) glass varistor based ceramics has been investigated.
Ismail Nur Quratul Aini, Sa’at Nor Kamilah, Zaid Mohd Hafiz Mohd   +2 more
doaj   +1 more source

Influência de dopantes doadores na degradação do varistor à base de SnO2 e o efeito do oxigênio pós-degradação nfluence of donor dopants on the degradation of SnO2 -based varistors and the effect of the oxygen post-degradation

Cerâmica, 2006
A degradação elétrica de varistores à base de SnO2 foi estudada e verificou-se que na temperatura de 220 ºC ocorreu a degradação do material. Suas características foram recuperadas quando tratadas em atmosfera de O2, o que mostra que esta atmosfera é ...
M. M. Oliveira, J. H. G. Rangel, V. C. de Sousa, E. R. Leite, E. Longo, P. R. Bueno, J. A. Varela   +6 more
doaj   +1 more source

Effect of soda lime silica glass doping on ZnO varistor ceramics: dry milling method

Journal of Asian Ceramic Societies, 2020
There is a lack of reports where dry milling methods have been used in the preparation of varistor based ceramics. Dry milling methods have been demonstrated to be able to produce fine and homogeneous sample powders.
Nur Quratul Aini Ismail, Nor Kamilah Saat, Mohd Hafiz Mohd Zaid   +2 more
doaj   +1 more source

Switching Overvoltages Protection of Power Electronics Converters with Gate Turn-off Thyristors

Energy Engineering and Control Systems, 2021
Using the developed models in the “Simulink” visual programming environment of the “Matlab” application package using the “SimPowerSystem” and “Simscape Electrical” libraries, a comparative analysis of methods and techniques for limiting switching ...
Yevhen Fediv, Olha Sivakova, Vladyslav Lysiak, Mykhailo Korchak   +3 more
doaj   +1 more source