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本文说明了根据热敏电阻的阻值和B值确定其温度特性曲线,然后根据其温度补偿器的特性及线框绕组的阻值,列出一元二次方程式,解方程求出分流电阻的阻值问题。计算结果与试验的实际情况完全相符。由此可知,适当选择分流电阻可以扩大热敏电阻温度补偿器的使用范围。同时发现,用台劳级数推导的公式所计算的分流电阻,尚存在一定的问题,这里提出来探讨。
This article describes the thermistor resistance and B value to determine the temperature characteristic curve, and then based on its temperature compensator characteristics and the resistance of the wire frame winding, list the quadratic equation, solve the equation to determine the shunt resistance Value problem. The calculation results exactly match the actual situation of the experiment. It can be seen, the appropriate choice of shunt resistor can expand the use of thermistor temperature compensator. At the same time, it is found that there are still some problems in the shunt resistance calculated by the formula deduced by Taiwan’s working class, which is put forward here.