Hi,
I'm currently building a complete WIG/TIG welder... microcotroller PCB
is runing and will be programmed probably next year (takes some
time ;-)
Currently I'm working on the arc starter.
I found an television high voltage transformer which has its resonance
frequency at 310kHz.. .I don't know why, but thie high frequency
works.
I get 3..4 cm at 12V and 2A... really lucky about that.
But I still failed to make the couppling from HV-side to the LV
welding lines.
There are several pictures available in the web with eg 20:20 turns...
every link says ... its running perfectly.
Here how I tried...
make 20:20 turns air coil with a diameter of app. 15mm...
connect one HV wire directly,
the second with a 1cm gap (no cap!)
No I was assuming to get a nice HV on the secondary side, but I get
nothing!
What is missing?... and why??
Please be so kind and tell me you opinion
If you have good links/suggestion... please post it
You can also write to
If I get good suggestions, I will summarize everything here.

Thanks and have a nice day

Best Regards

powerfreak