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在现行的自由电弧和压缩电弧的引燃方法中,实际最常用的是借助高压脉冲发生装置来提高电极空间的电场强度。虽然火花振荡器简单,使用元件不多,但需要经常对放电器进行调整和维护,而且要求有防止产生无线电干扰及避免高频电压影响电源绝缘和气电回路的保护装置。大多数的振荡发生器是并联接入焊接回路的。由于它们的输出端有电源电阻的分流作用,因此必须采用笨重的、复杂的
In the current free arc and compression arc ignition method, the most practical is the use of high-voltage pulse generator to improve the electrode space of the electric field strength. Although the spark oscillator is simple and requires few components, it requires frequent adjustments and maintenance of the arrester. It also requires protective devices that prevent radio interference and prevent high frequency voltages from affecting the power supply insulation and gas circuit. Most oscillators are connected in parallel to the welding circuit. Due to the shunt effect of the supply resistance at their outputs, they must be bulky and complicated