NTC-热敏电阻串、并联温度补偿电路设计

A design method of NTC-thermistor temperature compensating circuit in series/parallel

用函数极值方法分析NTC -热敏电阻串、并联电路 ,指出串联电路的输出电压和并联电路的等效热敏电阻存在重要的相似特性 ,用获得特性或公式法分析设计串、并联热敏电阻电路具有线性温区宽、灵敏度高、物理意义清晰等特性 ,最后给出具体设计实例 .

This paper analyses NTC-themistor circuit in series/parallel, indicates that there exists a great comparability between the output voltage of series circuit and the equivalent themistor in parallel circuit then, it analyses the designed thermistor circuit in series/parallel by obtaining the characteristic or using formula, result shows that the circuit with a wider linear temperature area, high sensitivity, and clear physical characteristic. At last, it presents some design examples of this method.