High efficiency auto-modulated welding arc power supply welding arc power supply

Claim 1

A HIGH EFFICIENCY AUTO-MODULATED WELDING ARE POWER SUPPLY FOR AUTOMATIC AND SEMI-AUTOMATIC WELDING, COMPRISING A SOURCE OF ALTERNATING CURRENT AT SUBSTANTIALLY WELDING VOLTAGE, MEANS FOR RECTIFYING THE OUTPUT OF SAID SOURCE OF ALTERNATING CURRENT, A PAIR OF LOAD TERMINALS FOR CONNECTION TO A WIRE FEED ELECTRODE AND WORK TO BE WELDED, A CONNECTION FROM THE POSITIVE SIDE OF SAID RECTIFIER MEANS TO ONE OF SAID LOAD TERMINALS, A CONNECTION FROM THE NEGATIVE SIDE OF SAID RECTIFIER MEANS TO THE OTHER OF SAID LOAD TERMINALS, BOTH SAID CONNECTIONS BEING CAPABLE OF CARRYING CURRENT OF A VALUE REQUIRED TO PRODUCE WELDING OF METAL, AND ELECTRICAL COMPONENTS IN SAID POWER SUPPLY BETWEEN SAID RECTIFIER MEANS AND SAID LOAD TERMINALS ADAPTED TO ESTABLISH A TANK CIRCUIT DURING USE OF SAID POWER SUPPLY, SAID TANK CIRCUIT INCLUDING A VARIABLE REACTOR IN ONE OF SAID CONNECTIONS FROM SAID RECTIFIER MEANS, AND CONDENSER MEANS HAVING A CAPACITY WITHIN A RANGE OF 20,000 TO 80,000 MICROFARADS CONNECTED BETWEEN SAID CONNECTIONS FROM A POINT ON THE ONE TO A POINT ON THE OTHER LOCATED BETWEEN SAID RECTIFIER MEANS AND SAID VARIABLE REACTOR, SAID REACTOR AND CONDENSER MEANS BEING OF SUCH VALUES AS TO ENABLE TUNING OF SAID TANK CIRCUIT TO FREQUENCIES WITHIN A RANGE OF 20-60 CYCLES, AND SAID CONDENSER MEANS, WHEN SO CONNECTED, BEING ADAPTED TO ACCUMULATE AND STORE SUBSTANTIAL ELECTRICAL ENERGY, AND IN COMBINATION WITH SAID REACTOR, DISCHARGE ENERGY AS NEEDED, INTO AN ARC TO MINIMIZE THE EFFECTS OF UNDESIRED AND OTHERWISE UNCONTROLLABLE FLUCTUATIONS IN SUCH ARC.