【摘要】 在单相晶闸管整流焊机中 ,并联带有交流和直流电感的整流支路 ,能把电流下限从 30A扩展到 5A左右。在小电流时 ,电弧能否引燃并连续燃烧的关键是使电流波形连续。电流波形最低点稍大于零所对应的电感是引燃电弧并使电弧连续燃烧所需的最小电感更多还原

【Abstract】 It can extend the minimum current of 30 A to about 5 A that a ancillary rectifier circuit parallelled in a single thyristor rectifier welder. Continuous current wave is necessary for arc ignition,the minimum inductance is equal to the inductance that make the lowest point of current wave just higher than zero.更多还原