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Electric arc start systems and methods

  • US 10,076,802 B2
  • Filed: 12/03/2015
  • Issued: 09/18/2018
  • Est. Priority Date: 12/19/2014
  • Status: Active Grant
First Claim
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1. A welding system, comprising:

  • a welding torch; and

    a welding power source coupled to the welding torch via a weld cable configured to supply welding power to the welding torch, wherein the welding power source comprises;

    pseudo-random noise (PRN) generator control logic circuitry configured to generate a dithered pulse waveform with a pseudo-randomly selected data sequence of binary values, and to apply the dithered pulse waveform to an oscillator during arc starting in a tungsten inert gas (TIG) welding process performed by the welding torch.

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