厚膜形過電流保護素子の実用化基礎研究

概要

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A thick film over-current protector with self-recovery has been developed using carbon black graft polymer. Carbon black graft polymer, henceforth called CG, is a thick film PTC thermistor material with a large and stable positive temperature coefficient of resistance. The over-current protector utilizes the dynamic currenttime characteristics of the CG element. When a very large current flows through the CG element, the temperature rises by self-heating, and the resistance of the element increases dramatically; as a result it restrains the current at a lower level. Since this element is not destroyed after excess current flow, it can be used repeatedly, unlike a metal fuse. In this paper, the thermal and electrical characteristics of the CG thick film overcurrent protector are investigated, including an analysis of these characteristics.
長岡工業高等専門学校の論文
2001-03-30