FIELD: electric welding; power sources with semiconductor switches with switching frequency exceeding frequency of commercial circuits. SUBSTANCE: electric welder has rectifier with filter and capacitor at outlet, load with transformer input, cathode and anode group switches, switch control device, diodes in number equal to that of switches and two voltage stabilizing diodes shunted by capacitors. EFFECT: enlarged operating capabilities. 1 dwg
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Authors
Dates
1997-05-10—Published
1992-02-17—Filed