Constant current welding power supply with auxilary power source

Details Constant current welding power supply with auxilary power source Constant current welding power supply with auxilary power source

1992-06-11

1993-06-08

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 9073

Patent

active

052181820

ABSTRACT:
An auxiliary power supply is connected through a fast acting switch to the output of a regulated, constant current welding power supply. A current sensing circuit monitoring the output current level actuates the fast acting switch whenever the current level falls below a predetermined value to insure that a minimum output current level is maintained. The auxiliary power supply is disconnected after the current level rises to a second, higher current level.

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patent: 3444430 (1969-05-01), Needham
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patent: 3792225 (1974-02-01), Needham et al.
patent: 3809853 (1974-05-01), Manz
patent: 4717807 (1988-01-01), Parks et al.
patent: 4866247 (1989-09-01), Parks et al.
patent: 4897522 (1990-01-01), Bilczo et al.
patent: 4897523 (1990-01-01), Parks et al.
patent: 5001326 (1991-03-01), Stava

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