A method of self-extinguishing arc discharge between the electrodes in which a voltage is applied to a fixed distance therebetween; a current melts and vaporizes a thin wire, which is placed between the electrodes, the distance is selected so between the electrodes, wherein discharge spontaneously without wires does not ignite, and between the electrodes, the conditions for avalanche discharge gap that arises in the presence of air, vapor evaporating the wire, characterized in that, in order to prevent self-ignition and arc quenching in the discharge channel is placed perpendicular to the channel direction of the magnetic field, wherein the charged particles increases maintenance of the discharge gap, which prevents the heating of the electrodes and their difficult vaporization.
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