Originally Posted by
handlewanker
Hi Al, I'm presently committed to changing my stick welder to do tig welding, using the usual add ons of diodes for DC and an inductor along with a High Frequency gizmo.
Wouldn't it be awesome to add EDM to the average DIY stick welder. If the voltage was brought up to about 100volts the power would blow your mind...yeahhh!
Starting with the average 100 amp stick welder all it would take is a step up transformer to get the volts.
Ian, One setback to keep in mind is that a stick welder is constant-current Variable-Voltage, because it is relatively higher open circuit voltage (~75v ).
The voltage start to collapse or decrease whenever a current starts to flow, This is usually done with a loosly or variably coupled (shunted) primary to secondary on the transformer.
I am not sure what the requirements are for TIG, but it is not much use for MIG as MIG requires ~35vdc and constant voltage.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.