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Educational Resources


Constant Power

'Constant power' works by measuring the voltage across and current drawn by the load. Current control circuits are used to accurately control output current of a power supply and can be used for applications with significant variations in electrical resistance from weld to weld, including applications where the plating erodes and builds-up on the face of the welding electrodes. Constant power mode:

  • Varies current and voltage for consistent energy
  • Breaks up surface oxides and plating
  • Is ideal for automation to extend electrode life


For more information, read our paper on High Frequency Inverter Feedback Modes