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PTC(Positive Temperature Coefficient)发热元件是一种正温度系数的半导体发热元件 ,它属于钛酸钡 (Ba Ti O3 )系列的化合物 ,采用陶瓷制造工艺烧结而成。由于它具有限温发热、无明火、不易引起燃烧、安全性好等特点而被铁路客车空调机组空气预热器所采用。1 PTC元件的主要
PTC (Positive Temperature Coefficient) heating element is a positive temperature coefficient of the semiconductor heating element, which belongs to the barium titanate (Ba Ti O3) series of compounds, the use of ceramic manufacturing process sintering. Because of its limited temperature heating, no open flame, not easy to cause combustion, safety and other characteristics of the air-conditioning unit by the railway passenger air preheater used. 1 PTC components of the main