31E12
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BrandEdiswan
ClassRadar Cathode Ray Tube
BaseDuodecal (B12A)
Filament6.3V @ 600mA
Construction
Primary TypeCathode Ray Tube
EnvelopeGlass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage14000 V
Grid 2 Voltage400 V
H-C Voltage150 V
Audio Performance
Key Features
- Aluminised screen
- Long afterglow
- Electrostatic Focus
- Magnetic Deflection
- Substantially flat face
- T6 or T7 screen options
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radar PPI Display | 12000V | - | - | - | - |
Application Notes
The T7 screen is liable to burn if a stationary or slowly moving spot is used even with low values of mean current.
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