电弧电压：一般认为电源正常输出电压即为切割电压。

Four, arc voltage: generally believe that the power supply is normal output voltage for cutting voltage.

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详细分析了影响焊接电源正常工作的干扰来源，提出了在设计焊接电源时防止干扰源的措施。

The article particularly analyzes the interfere source affecting the operation of power source, and takes the measures that avoids the interfere source as designing the power source.

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直流开关电源整流模块效率与输出电流存在直接相关性，目前电源正常工作时模块输出电流远低于额定电流，处于低效率区间。

Efficiency of rectifier module has relationship with its output current. Power supply works in low efficiency condition because output current below rated current far away.

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