Plasma cutter for auxiliary power output of a power source

Details Plasma cutter for auxiliary power output of a power source Plasma cutter for auxiliary power output of a power source

1998-07-09

2000-10-10

Walberg, Teresa

Electric heating

Metal heating

By arc

361 3, B23K 900

Patent

active

061303984

ABSTRACT:
A plasma arc cutting power supply, and method of providing plasma cutting power, is disclosed. It includes a source of power having, preferably an engine or transformer based power source, that provides a main power output and an auxiliary power output. A two-state configuration circuit is in electrical communication with the auxiliary power output. The auxiliary power output receives voltage of a first magnitude with a non-floating ground when the configuration circuit is in its first state. The auxiliary power output receives voltage of a second magnitude, preferably different than the first magnitude, with a floating ground, when the configuration circuit is in its second state. When a plasma cutting circuit is connected to the auxiliary power output the configuration circuit is set in its second state. The plasma cutting circuit includes at least one chopper. A safety circuit that disables the plasma output includes a GFI or optical isolator.

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patent: 5615093 (1997-03-01), Nalbant
patent: 5617013 (1997-04-01), Cozzi

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