... technology of 12 antipodal, 720Hz. Power supply is intermediate frequency, no transformer is needed, longlife Application Characteristic1, Welding property ... of 12 antipodal, 720Hz. Power supply is intermediate frequency, no transformer is needed, and it can be ... rotary sander, etc. H200 Engine Driven Arc Welding Machine ModelH200H200-1Generator Welding TypeManual arc WeldingManual arc WeldingNo-load ...