FIELD: electrical engineering. SUBSTANCE: magnetrone includes cylindrical cathode, cylinder with flanges used correspondingly as secondary emission emitter and focusing screens placed coaxially inside cathode with gap as well as body of autoelectron emitter. At least one hole is made in at least one of specified flanges which houses body of autoelectron emitter attached to carrying electrode and insulated from cylinder with flanges. EFFECT: provision for intensity of field at which autoelectron emission is sufficient for excitation of magnetron and momentary triggering without advanced heating of cathode. 8 cl, 6 dwg
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