Hello all, I have a small TIG inverter DC welder and want to put the output of that welder (which is around 40V and 20-140A DC adjustable constant current) though a circuit which will convert it to square wave AC with adjustable frequency and duty cycle. For those familiar with TIG welding this will allow me to weld aluminum.
I can imagine feeding the DC output from the welder though an H-Bridge of IGBT's or MOSFETs controlled by either a PIC or timer IC. Anyone have any links to similar schematics or others that have already done this?
Thanks!
I can imagine feeding the DC output from the welder though an H-Bridge of IGBT's or MOSFETs controlled by either a PIC or timer IC. Anyone have any links to similar schematics or others that have already done this?
Thanks!