Tube-number record
31C2
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31C2 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand MAZDA, construction Display / CRT, socket Duodecal, and maximum plate voltage 10000 V. The archive does not yet hold a photographed example of this type.
BrandMAZDA
ClassCathode Ray Tube
BaseDuodecal
Filament4 V @ 720 mA
Construction
Primary TypeDisplay / CRT
EnvelopeConcave face
SectionsSingle
Filament / Heater
Heater NotesHeater and cathode should be connected at same DC potential.
Absolute Maximum Ratings
Plate Voltage10000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 9500 V | — | — | — | 0.15 mA |
Application Notes
Specifically designed for Radio D.F. Compass. The 31C2 has an internal compass scale uniformly graduated. Cathode modulation requires a resistance not exceeding 100,000 Ohms between heater and cathode. Anode circuit should limit discharge current to 100 mA maximum in event of flash-over.
Datasheets
Datasheet: 31C2.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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