Tube-number record
A 31-120 W
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A 31-120 W is a tube type in the TubeDatabase archive (class: Television Picture Tube). Recorded specifications: brand AEG-TELEFUNKEN, construction Display / CRT, socket Miniature 7-pin (B7G), and maximum plate voltage 12000 V. The archive does not yet hold a photographed example of this type.
BrandAEG-TELEFUNKEN
ClassTelevision Picture Tube
BaseMiniature 7-pin (B7G)
Filament11 V @ 68 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated, parallel supply
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 2 Voltage500 V
Grid 1 Voltage-100 V
H-C Voltage130 V
Audio Performance
Key Features
- Electrostatic focusing
- 110° Magnetic deflection
- Metal-backed screen
- Gray glass
- Push-through arrangement mounting
- No safety plate required
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode drive | 11000 V | — | — | — | — |
Application Notes
The tube can be used without a safety plate. Centering magnet should be placed as close as possible to the deflection coil.
Datasheets
Datasheet: A31-120W.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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