Method for plating by condenser discharge

Claim 1

IN A METHOD OF UTLIZING AN ALTERNATING POTENTIAL FOR ELECTRO-PLATING A METAL CHOSEN FROM THE GROUP CONSISTING OF COPPER AND CADMIUM ONTO A BASE MEMBER FROM AN ELECTRO-PLATING ELECTROLYTE IN WHICH THE METAL TO BE PLATED IS DISSOLVED AND IN WHICH THE BASE MEMBER IS IMMERSED, SAID BASE MEMBER BEING ONE OF A PAIR OF SPACED ELECTRODES AND THE OTHER OF SAID ELECTRODES ALSO BEING IMMERSED IN SAID ELECTROLYTE, THE STEPS COMPRISING: SUPPLYING ELECTRICAL ENERGY TO THE PLATING ELECTRODES IN A SERIES OF UNIDIRECTIONAL PULSES OBTAINED BY STORING ELECTRICAL ENERGY FROM REPEATED NEGATIVE HALF-CYCLES OF SAID ALTERNATING POTENTIAL; ADDING THE POTENTIAL OF SAID STORED ENERGY FROM EACH NEGATIVE HALF-CYCLE TO THE POTENTIAL OF THE IMMEDIATELY SUBSEQUENT POSITIVE HALF CYCLE OF SAID ALTERNATION SOURCE; AND CONDUCTING THE RESULTING POTENTIALS THROUGH SAID PLATING BATH UNTIL A SELECTED QUANTITY OF ELECTRICAL ENERGY HAS BEEN CONDUCTED THERETHROUGH; CONTROLLING THE PORTION OF SAID STORED ENERGY BY CONTROLLING THE PORTION OF SAID NEGATIVE HALF-CYCLE WHICH IS STORED; AND FURTHER CONTROLLING THE MAGNITUDE OF CURRENT THROUGH SAID PLATING BATH BY CONTROLLING THE PORTION OF SAID POSITIVE HALF-CYCLE WHICH IS ADDED TO SAID STORED ENERGY.