G
[email protected]
- Jan 1, 1970
- 0
microtig welders typically run from 0.1A or less to 2.0A, constant
current. Unfortunately machines that can do this are very expensive.
These use (I think) squarewave DC to acheive a tight arc.
If I were to make a simple constant current circuit and drive it with a
benchtop function generator through a power mosfet or some other
switching device, would you foresee any problems?
Now also, apparently any sort of current surges during arc-start is bad
as it can blow a hole in the material being welded. I haven't the
foggiest idea what to do to prevent that, maybe some sort of capacitor
or something to buffer surges?
I know only a tiny bit about electronics, so forgive me if I am asking
something obvious or stupid.
current. Unfortunately machines that can do this are very expensive.
These use (I think) squarewave DC to acheive a tight arc.
If I were to make a simple constant current circuit and drive it with a
benchtop function generator through a power mosfet or some other
switching device, would you foresee any problems?
Now also, apparently any sort of current surges during arc-start is bad
as it can blow a hole in the material being welded. I haven't the
foggiest idea what to do to prevent that, maybe some sort of capacitor
or something to buffer surges?
I know only a tiny bit about electronics, so forgive me if I am asking
something obvious or stupid.