SC-3369
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BrandSylvania
ClassCharacter Writing Tube
BaseJ1-25
Filament6.3V @ 600mA
Construction
Primary TypeCathode Ray Tube
EnvelopeJ127B
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater Notes0.6 Ampere +/- 10%
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation8 W
Grid 2 Voltage700 V
Grid 1 Voltage-300 V
H-C Voltage180 V
Audio Performance
Key Features
- Character Writing Tube
- All glass cathode ray tube
- Electrostatic and Magnetic Deflection
- Electrostatic Focus
- Aluminized Screen
- P7 Phosphor (Blue/Yellow)
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Character Generation | 12000V | - | - | - | - |
Application Notes
Two pairs of electrostatic deflection plates are provided for character generation while character positioning is by means of magnetic deflection. The electrostatic deflection plates are designed to form a 1/4 inch square raster.
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