3346794

Information

• Patent Grant
• 3346794

• References
• Source

• Patent Number

  3,346,794

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1967
  57 years ago

• CPC

  • H02P27/08 - with pulse width modulation
  • B23K9/125 - Feeding of electrodes
  • H02M5/005 - using discharge tubes
  • H02M5/271 - from a three phase input voltage
  • H02M7/49 - Combination of the output voltage waveforms of a plurality of converters
  • H02M7/501 - sinusoidal output voltages being obtained by the combination of several pulse-voltages having different amplitude and width
  • H02M7/51 - using discharge tubes only
  • H02M7/527 - by pulse width modulation
  • H02P27/047 - V/F converter, wherein the voltage is controlled proportionally with the frequency
  • Y02P70/181 - relating to the design or operation of machines for soldering, welding or cutting by applying heat locally

• US Classifications

  • 318 - Electricity: motive power systems