Kabushiki Kaisha Toshiba

Tokyo Shibaura Denki Kabushiki Kaisha

Masataka Komine

Norio Tashiro

Masaki Adachi

Hisao Saito

Hikaru Matsuzaki

Tatsuo Simizu

Toshiyuki Matsuzaki

Saburo Matsushita

Toshio Ikeda

In a magnetron for microwave oven, a high-voltage input terminal structure 30 is provided on a shield box 26 mounted on a magnetron unit 22. The high-voltage input terminal structure 30 has a cylindrical earth electrode 33, a cylindrical high potential inner electrode 32 and a central conductor 31a. The cylindrical earth electrode 33 is secured to the shield box 26 and the cylindrical high potential inner electrode 32 is coaxially arranged in the cylindrical earth electrode 33. The central conductor 31a is connected through an inductor 28 to a cathode lead 27 of the magnetron unit 22. An insulating resin 34b is filled in a gap between the cylindrical earth electrode 33 and the highpotential electrode 32 to form a capacitor section C. Cylindrical insulating sheaths 37, 38 are formed by the resin on the both sides of the capacitor section C. The capacitor section C and the cylindrical insulating sheaths, 37, 38 are integrally formed and continuously extended along a straight line.

High-voltage input terminal structure of a magnetron for a microwave oven

A magnetron anode constructed by welding a pole piece to each open end of a copper anode cylinder. A nickel layer is plated on the surface of the pole piece. A welded mass resulting from welding the pole piece to the open end of the anode cylinder covers the peripheral edge of the pole piece. The welded is mostly formed of a nickel-copper alloy resulting from the mutual fusion of the copper material of the anode cylinder and the nickel of the nickel layer.

Magnetic anode and a method of manufacturing the same

Growing community of inventors

Yokohama, Japan

Masataka Komine