Converter used for a welding energy source in TIG welding comprises a current regulating unit connected to the power output of a welding energy source, a current sensor, a current control switch and a high frequency ignition device

摘要

Converter comprises a current regulating unit (2) connected to the power output of a welding energy source and having a switching component (3); a current sensor (4); a current control switch and a high frequency ignition device (5) for producing an ignition voltage for an electric arc. Preferred Features: A valve (7) is arranged in the welding current circuit and a diode (8) is arranged between current feeding lines of the circuit and connected between the switching component and the valve.