Quick warm-up cathode heater for high average power magnetrons

Details Quick warm-up cathode heater for high average power magnetrons Quick warm-up cathode heater for high average power magnetrons

1990-03-14

1992-07-14

Yusko, Donald J.

Electric lamp and discharge devices

With temperature modifier

Electric heater

313270, 313337, 313341, 315 3951, H01J 0120, H01J 2550

Patent

active

051306018

ABSTRACT:
An uncoated radiative heating filament wire is electrically and thermally isolated from the cathode of a high power magnetron. The filament wire helically surrounds the cathode support rod and is suspended above the support rod surface by ceramic members. A reflective shell envelops the helical filament wire and cathode support rod. The shell reflects radiated heat from the filament wire evenly upon the cathode support rod.

REFERENCES:
patent: 652635 (1950-06-01), Potter
patent: 3403281 (1968-09-01), Weaver
patent: 3465201 (1969-09-01), Dorgelo
patent: 3881126 (1975-04-01), Boots et al.
patent: 4494034 (1985-01-01), Keller
patent: 4683401 (1987-07-01), Okazaki

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