目前电阻应变片的测量电路及传感器中的变换电路大都采用恒压电桥电路,近年来,国外仪器中有采用双恒流源电路的,为此,本文对两种电路的优缺点及应用范围作了分析,並讨论了双恒流源电路的应用及线路补偿等问题。 At present, the measurement circuit of resistance strain gauges and the conversion circuit in the sensor are mostly constant voltage bridge circuits. In recent years, there are dual constant current source circuits in foreign instruments. For this reason, the advantages and disadvantages of these two circuits and the application range Made an analysis, and discussed the application of double constant current source circuit and line compensation and other issues.