Grounding structure and grounding method of vacuum tube audio amplifier
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United States of America Patent
Stats
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Nov 20, 2018
Grant Date -
N/A
app pub date -
Aug 31, 2017
filing date -
Aug 31, 2017
priority date (Note) -
In Force
status (Latency Note)
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US Family Size
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Non-US Coverage
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Abstract
The invention provides a grounding structure and a grounding method for a vacuum tube audio amplifier, the grounding structure and the grounding method including: with respect to a power source, utilizing a power circuit without a choke, an anti-coupling circuit, and a filament voltage regulator circuit; and with respect to the grounding method, utilizing an negative output terminal of an audio output transforming circuit or a negative terminal of a filter capacitor in the power circuit as a single ground terminal of the vacuum tube audio amplifier, and not arranging a grounding metal bottom plate therein, in order to achieve a compact, lightweight desktop model of a vacuum tube audio amplifier.
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International Classification(s)
- 2017 Application Filing Year
- H03F Class
- 1300 Applications Filed
- 1118 Patents Issued To-Date
- 86 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H03F Class
- 20.80 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 20, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 20, 2030 |