Electron gun assembly useful with traveling wave tubes

Details Electron gun assembly useful with traveling wave tubes Electron gun assembly useful with traveling wave tubes

1986-04-10

1988-05-31

Moore, David K.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

315 35, 315 5, 313237, 313243, 313253, 313256, 313257, 313265, 313289, 313292, 313293, H01J 2502, H01J 2534

Patent

active

047483695

ABSTRACT:
An electron gun for a vacuum tube employs a mounting element having an inner annular section with a defined thickness made to predetermined dimensional tolerances. The cathode subassembly is positioned on one surface of the annular section and a grid electrode is located on the opposing surface. When the mounting element is set within the vacuum tube facing the anode electrode, the location of the cathode subassembly and grid electrode in the mounting element establishes a precise cathode-to-anode spacing and the electrodes are properly aligned and concentric to a central axis along which the electron beam travels.

REFERENCES:
patent: 3588574 (1971-06-01), Hogg
patent: 3843902 (1974-10-01), Miram et al.
patent: 3859552 (1975-01-01), Hechtel
patent: 4471267 (1984-11-01), Amboss
patent: 4527091 (1985-07-01), Preist
patent: 4621213 (1986-11-01), Rand

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