The signal of acidity electrode is detected by a differential amplifier circuit, which consists of operational amplifiers TLC2254 with high input impedance and low drift.

采用高阻、低漂移运放t LC 2254组成高阻差动放大电路用于酸度电极信号测量。

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Research is made into the differential amplifier circuit by means of circuit theory analysis, differential amplifier theory analysis, "virtual-short" theory analysis and experiment way.

采用电路理论分析、差放理论分析、“虚短”理论分析及实验的方法对差分式放大电路进行了研究。

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The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.

磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。

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