Electric arc welding system

  • US 6,472,634 B1
  • Filed: 04/17/2001
  • Issued: 10/29/2002
  • Est. Priority Date: 04/17/2001
  • Status: Expired due to Term
First Claim
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1. An electric arc welding system for creating an AC welding arc between an electrode and a workpiece, said system comprising a first controller for a first power supply to cause said first power supply to create an AC current between said electrode and workpiece by generating a switch signal with polarity reversing switching points in general timed relationship with respect to a given system specific synchronizing signal to said first controller, said first controller operated at first welding parameters in response to first power supply specific parameter signals to said first controller, at least one slave controller for operating a slave power supply to create an AC current between said electrode and workpiece by reversing polarity of said AC current at switching points, said slave controller operated at second welding parameters in response to second power supply specific parameter signals to said slave controller, an information network connected to said first controller and said slave controller and containing digital first and second power supply specific parameter signals for said first controller and said slave controller and said given system specific synchronizing signal, and a digital interface connecting said first controller with said slave controller to control said switching points of said second power supply by said switch signal from said first controller.

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