Tube-number record
TKDD1
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BrandTungsram
ClassBattery Double Triode
Construction
Primary TypeDual triode
EnvelopeMax diameter 45 mm, total length 95 mm
Sections2
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage150 V
Grid 1 Voltage20 V
Cathode Current40 mA
Audio Performance
Typical THD8.5%
Power Output1.7 W
Key Features
- Klasse B-Schaltung
- Batterie Doppel-Triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B (90V Operation) | 90 V | — | — | — | 0.8 mA |
| Class B (135V Operation) | 135 V | — | — | — | 1.5 mA |
Application Notes
Die Mittelanzapfung des Drivertransformators liegt am negativen Pol der Heizbatterie. Wird sie zum positiven Pol geschaltet, so steigt der Anodenstromverbrauch im Ruhezustand, die Wiedergabe aber wird verbessert.
Datasheets
Datasheet: TKDD1.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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