Dc plasma torch electrical power design method and apparatus
AssigneeMonolith Materials, Inc.
InventorsJohn Jared Moss, Brian T. Noel
Life of this patent
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Abstract
A method and apparatus for operating a DC plasma torch. The power supply used is at least two times the average operating voltage used, resulting in a more stable operation of the torch. The torch can include two concentric cylinder electrodes, the electrodes can be graphite, and the plasma forming gas can be hydrogen. The power supply provided also has the capability of igniting the torch at a pulse voltage of at least 20 kilovolts.
Claims16
1-16. (canceled)
A method of operating a DC plasma arc torch using plasma forming gas and an operating voltage power supply, wherein the power supply is at least two times the average operating voltage used, resulting in more stable operation of the torch including reduced voltage fluctuations and substantially no extinguishing of the arc, and
- wherein the power supply contains inductive filters distributed among positive and negative legs of a regulator to prevent conducted emissions caused by the plasma arc torch from feeding back into sensitive electronic components.
An apparatus comprising, a DC plasma torch and an operating voltage power supply, wherein the power supply is at least two times the average operating voltage used, resulting in a more stable operation of the torch.
Dependencies are inferred from the claim text.