LIFETIME DETECTING METHOD OF MAGNETRON AND ITS LIFETIME DETECTION DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a lifetime detection device of a magnetron capable of detecting a lifetime of the magnetron at a life-ending time as early as possible. PSOLUTION: A lifetime detection device 21 having a wave guide filter for blocking the microwave power of normal oscillation and making the microwave power of abnormal oscillation pass through is provided, and fitted at a wave guide system circuit 18 of microwave power. When the magnetron 17 outputs microwave power generated by the abnormal oscillation, the microwave power of the abnormal oscillation is transmitted from a slot antenna of the wave guide system circuit 18 to the wave guide filter. From the action of an alarm corresponding to the microwave power of a coaxial wire terminal 16 appearing by the reception of the lifetime detection device 21, the life-ending time of the magnetron 17 is notified. PCOPYRIGHT: (C)2008,JPO&INPIT