| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetron enabled to prevent a noise at broadband, and to eliminate the damage of burning of the insulation film of coil winding forming an inductor. SOLUTION: A noise preventing filter, connected to an anode terminal of a magnetron body, is constructed by a plurality of inductors including a plurality of core-shaped inductors, and out of those plurality of inductors, the inductor directly connected to the cathode electrode is turned into the core-shaped inductor, and the Curie temperature of the core of the core-shaped inductor is made lower than the Curie temperature of the core of the other core-shaped inductor.
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