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前置放大电路的温度漂移问题,是高阻、高增益检测装置的共性问题。本文阐述了一种抑制温漂的多联装复合集成运放电路,这在改善放大电路的温漂特性、减少运算误差方面是一个初步的探索。一、前言我厂用于分析碳元素的库仓定碳仪,是由日本国际电气公司引进的设备,PH值放大电路是该机的前置放大部分,经过8年的服役后,该部件的专用集成运放组件损坏。由于该机采用玻璃电极作为信号源,内阻高达10~(12)欧姆,因此对于这种高阻抗、高增益
Pre-amplifier circuit temperature drift problem, high resistance, high gain detection device common problem. This article describes a multi-coupled integrated op amp circuit that suppresses temperature drift, which is a preliminary exploration to improve the drift characteristics of the amplifier circuit and to reduce operational errors. First, the foreword I plant for the analysis of carbon element warehouse silo, is introduced by Japan International Electric Company equipment, PH value amplifier circuit is the front part of the aircraft amplification, after 8 years of service, the components of Dedicated integrated op amp assembly is damaged. As the machine uses a glass electrode as a signal source, the internal resistance of up to 10 ~ (12) ohms, so for this high impedance, high gain