Electron tube, in particular a transmitter tube

Details Electron tube, in particular a transmitter tube Electron tube, in particular a transmitter tube

1983-07-27

1985-10-08

Lindsay, Robert

Electric lamp and discharge devices

Discharging devices with apertured electrode interposed...

Plural interposed apertured electrodes

313 37, 313 39, 313285, A47B 9600

Patent

active

045462860

ABSTRACT:
In a cathode for a heavy-duty electron tube, the cathode wires (5) lying on the surface (11) of a cylinder between two rigidly constructed connector rings (7, 8) have the form of a surface line with changing pitch. The cathode wires are connected by a support ring (6). The thermal expansion of the cathode wires during operation results only in a shifting on the surface (11). In this manner the cylindrical shape of the cathode and thus the distance to the control grid are maintained without the expensive spring suspension device used in the cage cathode.

REFERENCES:
patent: 2022212 (1935-11-01), Lippincott et al.
patent: 2277858 (1942-03-01), Skellett
patent: 2398609 (1946-04-01), Werner
patent: 2510171 (1950-06-01), Clark
patent: 3564318 (1971-02-01), Beggs
patent: 3567988 (1971-03-01), Randmer et al.

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