FIELD: electric welding engineering; welding arc excitation and stabilization. SUBSTANCE: welding oscillator has oscillatory circuit excited by means of spark gap formed between welding electrode and part being welded; DC voltage supplied from high-voltage source rated above 1000 V is applied to welding electrode and breaks down the air gap between the latter and part being welded. EFFECT: reduced noise level of oscillator. 3 cl, 2 dwg
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