摘要
通过实验研究了NTC热敏电阻随温度的变化情况,得到电阻～温度曲线。根据NTC热敏电阻值的自然对数与其绝对温度之间的线性关系,利用最小二乘法确定了热敏指数B,从而求得在测量温度范围内的温度系数αT。
The change of NTC thermistor with temperature was studied through the experiment,resistance-temperature curve was obtained.According to the linear relationship between the natural logarithm of NTC thermistor value and the absolute temperature,thermal index B was determined by using the least square method,and then the temperature coefficient was obtained in the temperature range of measurement.
出处
《大学物理实验》
2013年第4期16-17,26,共3页
Physical Experiment of College
关键词
NTC热敏电阻
热敏指数
温度系数
最小二乘法
NTC thermistor
thermal index
temperature coefficient
least square method
