Analog amplification vacuum tube
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United States of America Patent
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Jul 13, 2021
Grant Date -
Oct 15, 2020
app pub date -
Jan 10, 2019
filing date -
Jan 12, 2018
priority date (Note) -
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Abstract
An analog amplification vacuum tube of the present invention suppresses influences of filament vibration on amplification characteristics. The analog amplification vacuum tube of the present invention is provided with a filament, an anode, a grid and a vibration-proof part. The filament is tensioned linearly and emits thermal electrons. The anode is disposed parallel to the filament. The grid is disposed between the filament and the anode so as to face the anode. The vibration-proof part includes a thin film usable in a vacuum environment and the thin film comes into contact with part of the filament.
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