Explain how high-frequency alternating current and a pilot arc can be used to start a plasma arc torch.
What will be an ideal response?
?When the torch trigger is depressed, the plasma gas solenoid opens and the gas begins to flow through the torch tip. A few moments later, the high-frequency generator is turned on and the pilot arc relay contacts close.The high-frequency current ionizes the gas as an initial arc is created between the electrode and the nozzle, Figure 8-28A.
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What will be an ideal response?
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What will be an ideal response?
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What will be an ideal response?