This paper introduced how to use AD620 to form precision constant current source and its application in the measure of pipeline coat.
介绍运用AD6 2 0构成的精密恒流源 ，以及该恒流源在管道涂层检测中的应用。
The adaptive inverse control theory has been applied in the design of a constant current source with high precision, which can be made easily as simple circuit structure.
将自适应逆控制理论应用于高精度恒流源的设计，系统结构简单，易于实现。
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