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一、概述随着集成电路A/D转换器转换精度的提高,增益自控高精度线性放大器和微电脑技术的结合,使得宽范围高灵敏度数据测量显示电脑记录转换装置得以实现。这种带电脑装置的电压灵敏度为1μV(今后可达0.1μV)时满刻度为19.999mV,可在四个数量级范围内自动切换,并且电脑记忆的数据包括量纲、小数点位置,均可由打印机直接打印出来。本文作者研制的成套系列化产品见第七期内页广告。这里仅就有关的技术问题作一简单的综述。
I. Overview With the conversion accuracy of integrated circuit A / D converter to improve, gain-controlled high-precision linear amplifier and the combination of microcomputer technology, making a wide range of high-sensitivity data measurement computer recording conversion device to be achieved. With a voltage sensitivity of 1μV (up to 0.1μV in the future), this full-scale computer with 19.999mV full scale can automatically switch over four orders of magnitude, and the computer’s memory data includes dimensions and decimal point positions, all directly from the printer print it out. The author of this series of products developed in the seventh period within the page advertisement. Here only a brief overview of the technical issues involved.