31D12
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BrandAssociated Electrical Industries Limited
ClassCathode-ray Tube
BaseB9A/D
Filament6.3V @ 300mA
Construction
Primary TypeRectangular CRT
EnvelopeGlass, 8.5 inch diagonal
SectionsSingle
Filament / Heater
Heater NotesConnected at chassis end if used in series chain
Absolute Maximum Ratings
Plate Voltage15000 V
Grid 2 Voltage400 V
H-C Voltage200 V
Audio Performance
Key Features
- Magnetic deflection
- Low voltage electrostatic focusing
- Rectangular face
- Industrial monitoring
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Industrial monitoring | 12000V | - | - | - | - |
Application Notes
The socket for the B9A/D button base should not be rigidly mounted; it should have flexible leads and be allowed to move freely.
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