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Old 02-01-2012, 06:21 PM   #2485
KTM640Dakar OP
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Joined: Nov 2004
Location: Oxbow Lake
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Originally Posted by bobbed06 View Post
What is HF?
High Frequency in TIG welding is high voltage 30,000 volts that is produced at the start of a TIG weld in DC and is used the entire time you weld in AC. It is used in AC because the arc turns off 60 times per second as the current reverses from positive to negative and back. The high frequency helps keep the arc on and helps establish it. It is possible to TIG weld DC- without high frequency by scratch starting the tungsten to the work piece.

Yes it will mess with electronics but as stated if you disconnect the battery and set your ground close to were your welding you should be fine.

High frequency is just like static electricity with high voltage and low amperage. It will shock you but wont kill you. Just keep your body out of the welding loop.
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