压敏电阻和热敏电阻的应用

摘要

介绍了压敏电阻和热敏电阻的特性，阐述了热敏电阻与压敏电阻在电源保护器、温度变送器、压力变送器等方面的应用，指出压敏电阻具有较低的阻抗突变值，热敏电阻对于温度拥有非常的敏感性，两者一起构成了一个具有保护功能的电路。%The paper introduces the features of the piezoresistor and thermistor,illustrates their application in the power protector,temperature transmitter,pressure transmitter,and points out the piezoresistor has lower resistance mutation value while the thermistor is much sensitive to tem-perature,and the two can form the circuit to undertake the protection function.