Tube-number record
BW 189
0 archive entries
BrandMarconi's Wireless Telegraph Company Limited
ClassTransmitting Triode
Construction
Primary TypeTriode
EnvelopeWater-cooled anode
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage12000 V
Plate Dissipation35000 W
Cathode Current70000 mA
Audio Performance
Key Features
- Water-cooled anode
- Thoriated tungsten filament
- External grid and filament seal air cooling required
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF AMPLIFIER AND OSCILLATOR | 9000 V | 27500 | — | 34 | 2000 mA |
Application Notes
The valve must be operated at marked filament voltage. Reduced ratings (Va=8kV) up to 50 Mc/s.
Datasheets
Datasheet: BW189.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results