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近年来,随着大规模集成电路的迅速发展,袖珍数字式万用表日益普及。这种新颖的数字式万用表,性能完善、结构小巧、输入阻抗高,而且能够自动变换量程、自动显示测量结果和单位名数,深受广大电器维修工作者和业余爱好者的喜爱。数字式万用表由一块大规模集成电路以及石英晶体、液晶显示器和一些外围元件组成。一般字高为10毫米,最大读数为1999,并附有单位符号(mV、V、mA、A、Ω、kΩ)、AC(交流)、-以及小数点等标记。它除具有普通指针式万用表的功能外,还有一些独到的优点。现分述如下。
In recent years, with the rapid development of large-scale integrated circuits, pocket digital multimeter is increasingly popular. This novel digital multimeter, perfect performance, compact structure, high input impedance, and can automatically transform the range, automatically displays the measurement results and the number of units, by the majority of electrical maintenance workers and amateurs love. Digital multimeter consists of a large scale integrated circuits and quartz crystal, liquid crystal display and some peripheral components. The general word height is 10 mm and the maximum reading is 1999, with the unit symbols (mV, V, mA, A, Ω, kΩ), AC (alternating current), and decimal marks. In addition to its ordinary pointer multimeter function, there are some unique advantages. Now is as follows.