Tube-number record
BW 137
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BW 137 is a tube type in the TubeDatabase archive (class: HF Amplifier and Oscillator Triode). Recorded specifications: brand Marconi, construction Triode, maximum plate voltage 15000 V, and maximum plate dissipation 40000 W. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassHF Amplifier and Oscillator Triode
Construction
Primary TypeTriode
EnvelopeCooled-anode
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation40000 W
Audio Performance
Key Features
- Single-ended cooled-anode
- Tungsten filament
- Water-cooled anode
- Air-cooled grid and filament seals
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF AMPLIFIER AND OSCILLATOR | 9000 V | — | — | 40 | 2000 mA |
Application Notes
The anode forms part of the valve envelope and is designed for cooling by water circulated in direct contact with the envelope. The external grid and filament seals require air cooling through a nozzle.
Datasheets
Datasheet: BW137.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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