Tube-number record
237A
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BrandWestern Electric
ClassHalf-wave rectifier
BaseSpecial / none
Construction
Primary TypeRectifier
Rectifier TypeVacuum
EnvelopeWater-cooled anode
Sections1
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage50000 V
Cathode Current8000 mA
Audio Performance
Key Features
- Water-cooled anode
- Tungsten filament
- Requires vertical mounting
- Designed for DC supply from AC source
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circuit A (Single Phase, 2 tubes) | 15000 V | — | — | — | 3000 mA |
| Circuit B (Single Phase, 4 tubes) | 30000 V | — | — | — | 5000 mA |
| Circuit C (Three Phase, 6 tubes) | 45000 V | — | — | — |
Application Notes
The temperature of the water and rate of flow should be such that there is no tendency to boil. Distilled water is recommended in the cooling system. Tubes may be operated in parallel if provision is made to insure proper division of load current.
Datasheets
Datasheet: 237A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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