【摘要】 本文研究了气敏元件测量电路的一组优化设计，主要有线性升压加热源、元件电阻输出比例器、声光提示及自动回零电路等九部分。利用这组优化测试电路可直接绘出气敏元件电阻随加热电压变化的连续曲线、灵敏度精确值以及选择特性。它对气敏元件的特性研究和制作都是很有价值的。更多还原

【Abstract】 A group of optimum design of measuring circuit for gas sensor has been investi-gated in this paper. Linear step-up voltage heating power’resistance output ratio amplifier pho-to-phonon display and auto-return zero curcuit are included in measuring circuit. The VH-Rg continuous curves and precise values of sensitivity and selectivity of gas sensing elements have been given.更多还原