A 31-20 W
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BrandTELEFUNKEN
ClassTV-picture tube
BasePico 7 (similar)
Filament11V @ 68mA
Construction
Primary TypeCRT
EnvelopeGrey glass
Base MaterialGlass
SectionsSingle-gun
Filament / Heater
MaterialIndirectly heated
Heater NotesLow power (0.75 W)
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 2 Voltage350 V
H-C Voltage110 V
Audio Performance
Key Features
- Rectangular faceplate
- Spherical faceplate shape
- 90 degree magnetic deflection
- Electrostatic focus
- Grey glass screen
- Metal-backed screen
- No safety plate required
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode drive | 11000V | - | - | - | - |
Application Notes
Television picture tube intended for battery or line operation. Cathode drive operation is typical. Heater current of 68 mA is suitable for 11V power supplies.
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