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从一起NSA - 5 0 0 - 1型氩弧焊机故障 ,分析其高压脉冲旁路二极管VD9不同接法对引弧、稳弧及设备安全的影响
From a failure of NSA - 500 - 1 argon arc welder, the influence of high voltage pulse bypass diode VD9 on arc starting, arc stabilization and equipment safety was analyzed