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一、概述数字电压表是利用模拟—数字(A—D)转换器将直流电压直接以数字显示出来的一种测量仪表。它与指针式仪表相比,具有精度高,速度快,读数方便等优点,目前广泛用来测量电压和校准电压;还可以配以各种不同的输入装置,直接显示电的(如直流电流、电阻、交流电压,交流电流等)和非电的(如压力、重量、温度等)参数。数字电压表不仅单独作为测量仪表,具有优良的特性;更重要的是,它作为A—D变换器,输出数字讯号,可以直接将结果用打印机记录下来,也可以送入计算机进行数
First, an overview Digital voltmeter is the use of analog - digital (A-D) converter DC voltage directly to the digital display of a measuring instrument. Compared with the pointer instrument, it has the advantages of high precision, high speed, easy reading, etc. It is widely used to measure the voltage and the calibration voltage. It can also be equipped with various input devices to directly display the electrical (such as DC current, Resistance, AC voltage, AC current, etc.) and non-electrical (such as pressure, weight, temperature, etc.) parameters. Digital voltmeter not only as a measuring instrument alone, with excellent characteristics; more importantly, it is as A-D converter, the output digital signal, the result can be recorded directly with the printer, you can also send into the computer for the number