【摘要】 文章介绍了采用集成电路和4位LED数码管显示,并且具有测量精度高、灵敏度高、测量量程范围宽、适用范围广等特点的SD数字微电流仪的原理与设计,以及该微电流仪在物理实验中测量微电流和光强的典型应用实例。更多还原

【Abstract】 This paper introduces a new model of digital microcurrent instrument displaying the microcurrent on LED by A/D integrated circuit, with high measuring accuracy, high sensitivity and wide measuring range of the digital microcurrent instrument. In the physics experiment, typical usage and examples of measuring microcurrent and intensity of light are discussed.更多还原