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本文分析得出,在温度补偿电路的工作温区中,一个NTC——热敏电阻并联电路存在唯一最佳的微分电阻或最佳的温度特性: dR(TR_x)/DT=-(B-2T_p)~2/(4·BT_p~2)·γ(T_p) 实现最佳温度特性的条件,并联电阻R_x应为 R_x=(B-2T_p)/(B+2T_p)·γ(T_p) 用上述公式设计的热敏电阻补偿电路的方法称为中值法。中值法可以克服传统二、三点设计法的局限性。使用中值设计法补偿电路的PTC——晶体生长计算机控温系统,控温精度达 0.01℃。
The analysis of this paper shows that there is only the best differential resistance or the best temperature characteristic in an NTC-thermistor parallel circuit in the temperature range of the temperature compensation circuit: dR (TR_x) / DT = - (B-2T_p ) ~ 2 / (4 · BT_p ~ 2) · γ (T_p) In order to achieve the best temperature characteristics, the parallel resistor R_x should be R_x = (B-2T_p) / (B + 2T_p) The design of the thermistor compensation circuit method is called the median method. The median method can overcome the limitations of the traditional two or three point design method. Using the median design compensation circuit PTC - crystal growth computer temperature control system, temperature control accuracy of 0.01 ℃.