Method and apparatus for receiving a universal input voltage in a welding power source

  • US 6,239,407 B1
  • Filed: 11/25/1998
  • Issued: 05/29/2001
  • Est. Priority Date: 11/18/1994
  • Status: Expired due to Term
First Claim
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1. A welding, cutting or heating power source capable of receiving a range of input voltages, comprising:

  • an input rectifier configured to receive an ac input and to provide a first dc signal;

    a converter configured to receive the first dc signal and to provide a converter output, and configured to receive at least one control input;

    an output transformer configured to receive the converter output and to provide a third ac signal having a current suitable for welding, cutting or heating;

    an output circuit configured to receive the third ac signal and to provide a welding signal; and

    a controller, including a power factor correction circuit, configured to provide at least one control signal to the converter.

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