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US 12,250,764 B2Granted
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.
Claims15
A method for operating a direct current (DC) plasma arc torch, comprising:
- operating the DC plasma arc torch using a plasma forming gas and a power supply,
- wherein the power supply is configured to supply at least two times an average operating voltage used to operate the DC plasma arc torch, resulting in more stable operation of the DC plasma arc torch including reduced voltage fluctuations and substantially no extinguishing of an arc generated by the DC plasma arc torch, and
- wherein the power supply contains inductive filters distributed among positive and negative legs of a regulator to prevent conducted emissions caused by the DC plasma arc torch from feeding back into sensitive electronic components.
An apparatus for operating a direct current (DC) plasma torch, comprising:
- the DC plasma torch, and
- a power supply,
- wherein the power supply is configured to supply at least two times an average operating voltage used to operate the DC plasma torch, resulting in a more stable operation of the DC plasma torch, and
- wherein the power supply includes inductive filters distributed among positive and negative legs of a regulator to prevent conducted emissions caused by the DC plasma torch from feeding back to sensitive electronic components.
1 more element
Dependencies are inferred from the claim text.