FIELD: electrical equipment.
SUBSTANCE: invention relates to electrical engineering and can be used in power sources of welding arc for filtration of high-voltage pulses of high-frequency voltage excited by oscillators. Technical result is achieved due to that filter includes inductance, made in form of in-phase throttle, and two shunting capacitors, and parasitic voltage surges are suppressed by a gas discharger connected in series with a capacitor at the filter input.
EFFECT: technical result consists in development of inductive-capacitive filter, which will enable to effectively protect output stages of power sources of welding arc from HF pulses of high voltage, excited by oscillators.
1 cl, 1 dwg
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