摘要
Abstract
This design is the use of single chip microcomputer to realize the test, the resistance and capacitance was produced by more than 555 harmonic oscillation circuit, and the inductance is based on the three-point capaci-tance, so as to realize the measurement of each parameter. In the measurement circuit of resistance, it is divided into two levels to measure and to drive the relay and single chip microcomputer to realize, in this way, on the one hand, high measurement precision, on the other hand, easy to realize intelligent instrument and automation.关键词
单片机/555多谐振荡/电容三点式/继电器Key words
single chip microcomputer/555 harmonic oscillation/three-point capacitance/relay分类
社会科学
