Apparatus for counteracting the cathode current increase occurri

Details Apparatus for counteracting the cathode current increase occurri Apparatus for counteracting the cathode current increase occurri

1981-03-23

1984-09-11

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 3, 315 39, 313447, 313459, 324409, H01J 2534

Patent

active

044712650

ABSTRACT:
Apparatus for compensating the injurious increase of the cathode current occurring during the initial operation period of a travelling-wave tube when, during successive warming-up, the grid first approaches the cathode and then assumes the nominal distance therefrom. The apparatus includes a distance control device measuring the deviation between the actual grid-cathode distance and the nominal distance and generating a control signal proportional to the deviation for reducing the value of the grid voltage.

REFERENCES:
patent: Re26384 (1968-04-01), Chalk
patent: 3156029 (1964-11-01), Simon
patent: 3316485 (1967-04-01), La Rue et al.
patent: 3890545 (1975-06-01), Rosen
patent: 4321505 (1982-03-01), Miram

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