| 摘要 |
An object of the invention is to provide a magnetron drive power supply for performing stable inverter operation and good in development efficiency. According to the invention, the potential difference between emitter terminal potential (121) of a switching element (12) and minus terminal potential (101) of a rectifying device (1) can be minimized and stable switching operation and abnormal voltage detection can be realized. There can be provided an optimum magnetron drive power supply responsive to the power supply voltage and good in development efficiency because of unification of chassis, etc., with commonality of component placements, particularly ground connection positions (41) and filament output positions (42) of a magnetron drive power supply in the rated voltage range of 100 V to 120 V and a magnetron drive power supply in the rated voltage range of 200 V to 240 V.
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