With two parallel circuits on arc powered supply, it settles the welding current unicity, stabilizes forerunner arc and ensures enough welding time.

电弧供电采用了两种并联电路，解决了焊接电流的单一性，提供了稳定的先导电弧，保证了足够的焊接时间。

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The result of developing SCR power supply for pulse plasma arc welding is introduced in this paper.

本文介绍了可控硅脉冲等离子弧焊电源的研制成果。

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Study of the dynamic output characteristics of arc welding power supply is of great significance for optimization of welder design, control of welding process and improvement of welding quality.

弧焊电源的输出动态特性的研究，对优化焊机性能、焊接过程控制和改善工艺效果有重要意义。

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