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Power source for electric arc welding

  • US 9,751,150 B2
  • Filed: 08/10/2012
  • Issued: 09/05/2017
  • Est. Priority Date: 07/13/2004
  • Status: Active Grant
First Claim
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1. A power source comprising:

  • an input rectifier for receipt of an AC input signal to output a rectified DC signal;

    a power factor correcting converter connected to said input rectifier to convert said rectified DC signal to a first fixed DC voltage signal having a first magnitude to define a first DC bus;

    DC to DC inverter connected to said first DC bus to convert said first fixed DC signal to a second fixed DC voltage signal having a second magnitude to define a second DC bus, where said second magnitude is lower than said first magnitude; and

    a regulated output converter coupled to said second DC bus to convert said second fixed DC signal to an output signal for a welding process, said output converter being regulated by a feedback signal from said welding process.

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