在日本最新的半自动焊机里,为了从小电流到大电流广范围地稳定电弧,减少飞溅,采用了叠加回路的新方法。叠加(Superpose)方法(DRC回路)的电弧稳定回路(见图),它与从前的固定的直流电抗器不同,在大电流领域里保持原有的电感值,但在小电流领域里其电感值能自动地减少。即: (1)当焊接电流急剧变动时,它的变动量也就是在直流电抗器上产生与电流 In Japan’s latest semi-automatic welder, a new method of stacking circuits is used to stabilize the arc from a small current to a large current and to reduce spatter. The arc stabilizing circuit (see photo) of the Superpose method (DRC circuit), unlike conventional fixed DC reactors, maintains the original inductance in the high-current area but its inductance in the low-current area Can automatically reduce. That is: (1) When the welding current changes rapidly, its variation is the DC reactor with the current