Critical temperature thermistor how to use

Thermistor is a kind of sensitive element, has a good stability, small size, flexible use and other advantages. When we were in the use of thermistor for thermistor type is also need to know, thermistors can be divided into positive temperature coefficient thermistor, negative temperature coefficient thermistor, critical temperature thermistor. Project is mainly to introduce the critical temperature for everyone today thermistor, hope you can help to you.

critical temperature thermistor CTR ( 临界温度电阻) Negative resistance mutation characteristics, at a certain temperature, the resistance increased with the temperature JiJu decreases, and has a great deal of negative temperature coefficient. Constitute a material is vanadium oxide, barium, strontium, phosphorus and other elements mixed sinter, is half a glass of semiconductor, also calls the CTR thermistor for glass state. The sudden temperature with adding germanium, such as tungsten, molybdenum oxide. This is due to the incorporation of different impurities, the vanadium oxide lattice spacing is different. If the vanadium pentoxide in appropriate reduction atmosphere into vanadium dioxide, bigger resistance rapidly varied temperature; If further reduction of vanadium trioxide, the leaps disappear. Produce resistance rapidly varied temperature corresponding to the half glass semiconductor material quick location, therefore produce - semiconductor Metal phase shift. CTR can as application temperature alarm and so on.

thermistor of theory research and application development has achieved remarkable results. With the application of high, refined, sharp technology, the conductive mechanism and the application of thermal resistor of deeper exploration, as well as to the further research of new materials with excellent properties will be achieved rapid development.

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