Al,
Any/All of the GMAWP power supplies out there provide a welding arc that is "adaptive" as well as synergic.
The adaptive arc has both CC and CV tendencies.. Meaning:
A. That the spray transfer Arc Length remains constant regardless of contact tube distance from the work. This is a CV attribute.
B. That the current remains constant regardless of the contact tube to work distance. This is a CC attribute.
Every GMAWP power supply on the market provides an arc with both of these attributes so that the "current" and "trim" remain consistant during changes by the operator in "stickout"..... Unlike traditional CV GMAW which an extension in the length between the end of the contact tube and the work would reduce current.
They are identifyable as CC/CV by what they do.
Miller explains *adaptive* GMAWP this way in one example:
"“hybrid” CC/CV (constant current/constant voltage) process that overcomes virtually all of the limitations of older and competitive pulsed MIG technology. Accu-Pulse solves DTR’s welding problems in several ways. First, it adjusts the current to a predetermined level at the beginning of each peak and background phase (see Fig. 9). Once the target current is reached at the beginning of each phase, the CC control of the current turns off and the CV control loop turns on. The current floats within a limited range based on the actual arc condition present and the voltage is kept constant allowing Accu-Pulse to maintain a much shorter actual arc length"
http://www.millerwelds.com/resources/articles/Auto-Axcess-multi-MIG-gmaw-welding/ Miller, Lincoln, ESAB, Fronius.... It doesn't matter.. If arc length (a function of voltage) and current, both adapt to operator changes by keeping arc length and amperage constant... The power supply MUST be delivering CC and CV..
The various manufacturers certainly have different wave forms to achieve similar ends. ... But to wrap it.. All GMAWP power supplies are CC/CV this is not even a question. They are what they are.. And.. All GMAWP arcs out there in the market produce both CC and CV attributes.. Case closed :)