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现代下降特性电子弧焊电源设置的后拖特性一般是由电弧电压取样作为参考电压形成的。本文介绍一种采用自适应电流调节器实现后拖特性的工作原理，它的电路简单，避免了弧压干扰，提高了系统的稳定性。
Modern descending characteristics Electric arc welding power settings after the drag characteristic is generally formed by the arc voltage sampling as a reference voltage. This paper introduces an adaptive current regulator to achieve after-drag characteristics of the working principle of its circuit is simple, to avoid the arc voltage interference and improve the stability of the system.