本文阐述热敏电阻电桥的应变电源电路[1]作为一种新型的补偿电路用于热电偶的参考端补偿,理沦上能够实现全补偿,文中导出全补偿条件。在此基础上采用分段线性变增益放大器对热电特性进行线性化处理。从而较大地提高以热电偶作为感温元件并要求线性输出的测、控温仪表的精确度。最后给出设计举例和实验结果。 This article describes the thermistor bridge strain circuit [1] as a new type of compensation circuit for the thermocouple reference side compensation, reasonably reduced to achieve full compensation, the paper derived full compensation conditions. On this basis, a piecewise linear variable gain amplifier is used to linearize the thermoelectric properties. Thereby greatly improving the thermocouple as a temperature sensing element and requires linear output of the test, temperature control meter accuracy. Finally, design examples and experimental results are given.