31G12
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BrandAssociated Electrical Industries (AEI)
ClassCathode-ray Tube
BaseB12A Duodecal
Filament6.3V @ 600mA
Construction
Primary TypeElectrostatically focused, magnetically deflected CRT
EnvelopeRectangular grey glass, aluminised
Base MaterialGlass
SectionsSingle gun
Filament / Heater
Heater NotesHeater negative relative to cathode
Absolute Maximum Ratings
Plate Voltage16000 V
Grid 2 Voltage400 V
H-C Voltage180 V
Audio Performance
Key Features
- Large screen oscilloscope application
- 90 degree deflection angle
- T9 screen with long orange afterglow
- Aluminised screen
- Electrostatically focused
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| General | 14500V | - | - | - | 0.15mA |
Application Notes
The T9 screen is liable to burn if operated with a stationary or slow-moving spot.
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