INVERTER CONSTANT-CURRENT SOURCE FOR ARC WELDING Russian patent published in 1995 - IPC

FIELD: welding technology. SUBSTANCE: device has net rectifier 1, inverter 2 with control circuit 6, welding rectifiers 3 and throttle 4, current meters 5, power meters 13, minimum voltage comparators 7, voltage comparators 8, power comparators 9, maximum 10 and minimum 11 current comparators, short-circuit current comparators 12 as well as starting device 15 and AND element 16. EFFECT: improved quality of the welded joint at the expense of the optimal regulation of the open-circuit voltage, of the short-circuit current and power. 1 dwg