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1. (WO1979000329) MAGNETRON
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000329    International Application No.:    PCT/JP1978/000033
Publication Date: 14.06.1979 International Filing Date: 27.11.1978
H01J 23/10 (2006.01), H01J 23/14 (2006.01)
Priority Data:
77/144425 30.11.1977 JP
Abstract: front page image
(EN)In a leading-in arrangement of cathode leads (85, 86) connecting with the cathode filament (68) which is placed along the center line of an evacuated external case (50) forming part of a cylindrical anode (51) of a magnetron, a magnet pole (77) has a vertical hole (75) along the center line and a horizontal hole (76) connected at right angles with the vertical hole and the cathode leads are taken in through these holes. By means of this leading-in arrangement a cylindrical permanent magnet (73) made from a material of alnicos is located in a magnetic circuit. The cylindrical anode (51) consists of a moulded member having cylindrical parts of smaller (54) and greater (55) diameters. An output (64) and an input (65) are attached to the side of the cylindrical part with the greater. If, as preferred, the permanent magnets (71, 73) are placed in hollows on the outside of the case and furthermore are placed in inside the yokes (72, 74) for the magnetic circuit, a magnetic force can be obtained inside the case while the magnets themselves are located outside.
(FR)Dans un ensemble d"alimentation comportant une ligne (85, 86) d"alimentation de la cathode reliee au filament (68) de la cathode dispose le long de l"axe d"une enceinte exterieure sous vide (50) qui fait partie de l"anode cylindrique (51) d"un magnetron, un pole d"aimant (77) presente un trou vertical (75) dispose le long de la ligne centrale ainsi qu"un trou horizontal (76) qui communique a angle droit avec le trou vertical et la ligne d"alimentation de la cathode penetre par ces trous. Grace a cette disposition un aimant permanent cylindrique (73), en un materiau d"alnicos (aluminium, nickel, cobalt) est place dans un circuit magnetique. L"anode cylindrique (51) consiste en une piece moulee presentant des parties cylindriques de diametre reduit (54) et de diametre plus important (55). Un depart (64) et une arrivee (65) sont fixes a la partie cylindrique de plus fort diametre. Si, comme prefere, les aimants permanents (71, 73) sont places dans des logements sur l"exterieur de l"enceinte et, de plus, sont situes dans les culasses (72, 74) pour le circuit magnetique, on peut obtenir une force magnetique a l"interieur de l"enceinte alors que les aimants eux-memes sont situes a l"exterieur de celle-ci.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)