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Old 01-04-2013, 06:08 AM
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Originally Posted by timothale View Post
My old Airco tig has a hand crank amp controll and HI freq switch. It would want to keep welding after I turned of the HF switch. I never changed it but I have a couple of Motor starters like used on commercial equipment, They are made work on 3 phase but you just hook up the 2 wires for single phase, they have the actuating coil that can be interchanged for different controll voltages, I was going to use a 110 v coil and a $ 20 foot pedal from graingers. But I bought a Newer Lincoln Sq wave 255 Tig. I still like the old Airco to stick weld with since I can use HF stick when welding on painted dirty farm equipment. The Lincoln HF only works on Tig. you would use the foot pedal on the weld power supply circuit.
would that be on the primary side of the transformer alowing current to the rest of the machine ? You wouldn't want to switch the secondary side, would you???
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