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Systems and methods are provided for a torch power system using a multi-stage compressor. In one embodiment, a system includes a torch power unit that includes a compressor having multiple compression stages. A method of operation is provided that includes compressing a gas via a multi-stage compres

Systems and methods are provided for a torch power system using a multi-stage compressor. In one embodiment, a system includes a torch power unit that includes a compressor having multiple compression stages. A method of operation is provided that includes compressing a gas via a multi-stage compressor in a torch power unit. A method of manufacturing a torch power unit is provided that includes providing a multi-stage compressor for a torch power unit and mounting the multi-stage compressor inside an enclosure of the torch power unit. Another system is provided that includes a plasma cutting circuit, a multi-stage compressor, a motor coupled to the compressor, and a compressor controller.

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1. A system, comprising: a torch power unit, comprising: power electronics configured to provide power to a torch;a compressor having multiple compression stages configured to compress a gas to provide a compressed gas output to at least one device coupled to the compressor; anda first cooling coil

1. A system, comprising: a torch power unit, comprising: power electronics configured to provide power to a torch;a compressor having multiple compression stages configured to compress a gas to provide a compressed gas output to at least one device coupled to the compressor; anda first cooling coil coupled to the compressor and configured to cool the gas downstream of a first stage of the multiple compression stages and upstream of the at least one device. 2. The system of claim 1, wherein the compressor comprises a plurality of compression chambers configured to compress the gas in the multiple compression stages, wherein each of the plurality of compression chambers operates in series with the others of the plurality of compression chambers. 3. The system of claim 1, wherein the compressor comprises a reciprocating compressor having at least two compression stages. 4. The system of claim 1, wherein the torch power unit comprises a control panel configured to switch the compressed gas output of the compressor between the torch and the at least one device based at least in part on an input to the control panel. 5. The system of claim 1, wherein the power electronics comprise a welding circuit, cutting circuit, induction heating circuit, or combination thereof. 6. The system of claim 1, wherein the power electronics comprise a plasma cutting circuit, and the compressor is configured to provide the compressed gas output to the torch to generate a plasma to cut a work piece. 7. The system of claim 1, wherein the torch power unit comprises an electrical generator. 8. The system of claim 1, comprising a second cooling coil coupled to a downstream end of the compressor, wherein the first cooling coil is coupled between the first stage of the compressor and a second stage of the compressor. 9. The system of claim 1, wherein the at least one device comprises a pneumatic tool. 10. The system of claim 1, wherein the compressor comprises at least three compression stages. 11. The system of claim 1, comprising a fan configured to circulate air about the torch power unit. 12. A method of operation, comprising: compressing a gas via a multi-stage compressor in a torch power unit to provide a compressed gas, wherein compressing the gas comprises compressing the gas in a first chamber and a second chamber of the multi-stage compressor;cooling the gas via at least one cooling coil after compression in the first chamber;outputting the compressed and cooled gas from the torch power unit for supply to a plasma cutting torch; andoutputting a power from the torch power unit for supply to the plasma cutting torch. 13. The method of claim 12, comprising cooling the gas after compression in the second chamber of the multi-stage compressor. 14. The method of claim 12, comprising controlling the compressed gas and the power output by the torch power unit to control a plasma generated at the plasma cutting torch. 15. The method of claim 12, comprising generating an arc between the plasma cutting torch and a workpiece using the power, generating the plasma with the arc and the gas at the plasma cutting torch, and cutting the workpiece with the plasma. 16. The method of claim 12, comprising driving the multi-stage compressor via a gas combustion engine. 17. A method of manufacturing a torch power unit, comprising: providing a multi-stage compressor for a torch power unit;coupling at least one cooling coil to the multi-stage compressor, wherein the multi-stage compressor is configured to compress gas via a plurality of compression chambers, and the at least one cooling coil is configured to cool the gas downstream of at least one compression chamber of the plurality of compression chambers; andmounting the multi-stage compressor and the at least one cooling coil inside an enclosure of the torch power unit. 18. The method of claim 17, wherein the at least one cooling coil is configured to cool the gas downstream of the plurality of compression chambers of the multi-stage compressor. 19. The method of claim 17, comprising mounting a welding circuit, a cutting circuit, or both, inside the enclosure. 20. The method of claim 17, comprising mounting at least one of a fan and a heat sink at least partially inside the enclosure.