Tube-number record
FTW 3-1
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BrandBrown Boveri
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Sections1
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage7000 V
Plate Dissipation5000 W
Grid 1 Voltage-1000 V
Cathode Current10000 mA
Audio Performance
Power Output7000 W
Key Features
- Water-cooled
- Directly heated cathode
- Industrial and communication use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C, RF, unmodulated | 7000 V | 13000 | — | 28 | — |
Application Notes
Tube mounting position: vertical, anode down. For RF and AF applications in industry and broadcast.
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