Not every welder/generator offers simultaneous AC/DC operation.

But the SDW225SSA does! It operates as a 6kW generator and 225-amp welder and is ideally suited for SMAW, FCAW, GMAW, GTAW and ACAC welding processes. Powered by a 12-horsepower Kubota Z482 diesel engine, the SDW-225SS is a brushless machine with a weather-resistant housing making it suitable for numerous applications. The welder/generator regulates voltage at 2 percent. With trailer.