恒流源在现代检测计量以及节能环保等热点领域中发挥着重要作用,从可控恒流源系统的整体方案设计,到各模块电路设计、原理、特点及参数选择进行了分析讨论和实践,并且分析了影响恒流源技术指标的因素及解决办法;说明了采用单片机实现连续输出与脉动输出的控制思路,同时提供了软件编程的框图.%The constant current source plays an important role in hot fields such as modern test and measurement, energy saving and environmental protection. This paper discusses and analyzes overall scheme design of the controlled constant current source system, as well as the design, principle, characteristics and parameter selection of modular circuits. Furthermore, it analyzes factors affecting technical indexes of the constant current source, as well as solutions, and explains the control idea that the single chip microcomputer can be used to realize continuous output and pulse output. In the meantime, it provides a block diagram for software programming.
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