Tube-number record
31D15
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31D15 is a tube type in the TubeDatabase archive (class: Cathode-ray Tube). Recorded specifications: brand Associated Electrical Industries Limited, construction Display / CRT, base Glass, socket CRT base (B8H), and maximum plate voltage 15000 V. The archive does not yet hold a photographed example of this type.
BrandAssociated Electrical Industries Limited
ClassCathode-ray Tube
BaseCRT base (B8H)
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesThe cathode-ray tube heater should always be connected at the chassis end if used in a series heater chain.
Absolute Maximum Ratings
Plate Voltage15000 V
Grid 2 Voltage500 V
H-C Voltage200 V
Audio Performance
Key Features
- 90° magnetic deflection
- Low voltage electrostatic focusing
- Industrial monitoring equipment application
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 12000 V | — | — | — | 0.15 mA |
Application Notes
The socket for the B8H button base should not be rigidly mounted; it should have flexible leads and be allowed to move freely to avoid lateral strains.
Datasheets
Datasheet: 31D15.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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