FIELD: electricity.
SUBSTANCE: between electrodes at fixed distance between them there supplied is voltage; appearing current melts and evaporates thin wire which is arranged between electrodes; distance between electrodes is chosen so that discharge does not occur spontaneously without wire, and conditions for avalanche breakdown of discharge gap are created between electrodes. At that, electrodes are placed in chamber with holes for suction and passage of gas through discharge gap and serve as heat source at combustion of metal of electrodes in air.
EFFECT: development of self-sustained arc discharge.
1 dwg
