Tube-number record
31C14
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BrandEdiswan
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
Envelope6 inch diameter flat face, aluminised
Base MaterialDuodecal
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage12500 V
H-C Voltage150 V
Audio Performance
Key Features
- Screen type T1 (green trace, medium persistence)
- Internal compass scale uniformly graduated
- Reduced specular reflection face treatment
- Aluminised
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio D.F. Compass Operation | 9500 V | — | — | — | 0.15 mA |
Application Notes
A resistance should be inserted in the anode circuit to limit discharge current to 100mA max in event of flash-over.
Datasheets
Datasheet: 31C14.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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