Title:
ANALOG AMPLIFICATION VACUUM TUBE
Document Type and Number:
WIPO Patent Application WO/2019/139074
Kind Code:
A1
Abstract:
An analog amplification vacuum tube according to the present invention suppresses the influence of filament vibration on amplification characteristics. The analog amplification vacuum tube according to the present invention is provided with a filament, an anode, a grid, and a vibration-proof part. The filament is linearly laid, and emits thermoelectrons. The anode is disposed in parallel with the filament. The grid is disposed, so as to oppose the anode, between the filament and the anode. The vibration-proof part has a thin film usable in a vacuum environment, and the thin film comes into contact with a part of the filament.
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Inventors:
TATSUDA KAZUNORI (JP)
NAKAO TAKEHIRO (JP)
EZAKI TOMOTAKA (JP)
NAKAO TAKEHIRO (JP)
EZAKI TOMOTAKA (JP)
Application Number:
PCT/JP2019/000500
Publication Date:
July 18, 2019
Filing Date:
January 10, 2019
Export Citation:
Assignee:
NORITAKE CO LTD (JP)
NORITAKE ITRON CORP (JP)
NORITAKE ITRON CORP (JP)
International Classes:
H01J19/12; H01J19/42; H01J21/22
Foreign References:
| JP2016134299A | 2016-07-25 | |||
| JP2007188848A | 2007-07-26 | |||
| JPH0340346A | 1991-02-21 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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