Magnetron unit with a magnetic field adjusting means

Details Magnetron unit with a magnetic field adjusting means Magnetron unit with a magnetic field adjusting means

1980-02-25

1982-07-06

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Distributed parameter resonator-type magnetron

313 46, 313151, 315 3951, 315 3975, H01J 2550

Patent

active

043385451

ABSTRACT:
A magnetron unit is provided with anode cylinder with a number of vanes defining resonance cavities, and a cathode disposed along the axis of the anode cylinder. An axial interaction space into which a magnetic field is developed is disposed between the vanes and the cathode. Provided is a pair of main pole pieces with the interaction space located therebetween to supply the magnetic field into the interaction space. Permanent magnet members are magnetically coupled with the pair of the main pole pieces for supplying magnetic energy to the main pole pieces. The permanent magnet members are magnetically coupled with each other by a yoke. Auxiliary pole pieces are disposed at the top ends of the main pole pieces at a given interval. The auxiliary pole pieces are supported by bimetal members fixed to them. When the temperature of the permanent magnet member, the bimetallic members rises moves the auxiliary pole pieces toward the interaction space. A reduction of the magnetomotive force of each permanent magnet member is offset by a reduction of the interval between the pair of the auxiliary pole pieces.

REFERENCES:
patent: 2429295 (1947-10-01), Quitter
patent: 2449090 (1948-09-01), Spencer
patent: 2452078 (1948-10-01), Spencer
patent: 2806178 (1957-09-01), Litton et al.
patent: 2957100 (1960-10-01), Espersen et al.
patent: 4027194 (1977-05-01), Yamano et al.
patent: 4063129 (1977-12-01), Miura et al.
patent: 4223246 (1980-09-01), Osepchuk

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