Polarization absorption currents and conduction response characteristics of zinc oxide varistors

Autor:	Liu Fuyi, Li Sheng-Tao, Zhang Haien
Rok vydání:	2002
Předmět:	Materials science chemistry Electrical resistance and conductance Equivalent series resistance Condensed matter physics Electrical resistivity and conductivity Electronic engineering chemistry.chemical_element Varistor Grain boundary Optical polarization Zinc Thermal conduction
Zdroj:	[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials.
DOI:	10.1109/icpadm.1991.172108
Popis:	The absorption currents and conduction response characteristics of zinc oxide varistors were measured with step voltage pulses of different amplitude, and a series resistance was used to stimulate the ZnO grain resistance of zinc oxide varistors. Based on an analysis of the experimental results, three kinds of absorption current were found, and an equivalent circuit describing the electrical properties of zinc oxide varistors was developed. It is deduced that conduction response time results from the equivalent capacitance of the grain boundary, and there is a close relation between the conduction delay phenomenon and the polarization absorption current. The larger the ZnO grain resistivity the shorter is the conduction response time. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::01054f4efcd0c7f3aea2d8814a5fb362 https://doi.org/10.1109/icpadm.1991.172108 Zobrazit plný text záznamu