关键词: 4-20mA, 0-20mA, current loop, current loop transmission, DAC, V/I, V to I, converter, digital to analog converter
Abstract: This article shows an example of implementing a 4-20mA or 0-20mA current-loop output using a voltage output digital-to-analog converter (DAC) and a V to I converter.
Selectable-Range Current Loop.pdf 
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