Zinc oxide varistors
- 1 November 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Electrical Insulation Magazine
- Vol. 5 (6) , 28-30
- https://doi.org/10.1109/57.44606
Abstract
An overview is given of zinc oxide varistors, which are made of semiconducting ceramics with highly nonohmic current-voltage characteristics, which originate at the grain boundaries. These varistors are widely utilized to protect electric power lines and electronic components against dangerous voltage surges. This overview covers electrical characteristics, fabrication methods, effects of additives, microstructures, the conduction mechanism, degradation, and applications.Keywords
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