12LP4-A
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BrandGeneral Electric
ClassTelevision Picture Tube
BaseB5-57
Filament6.3V @ 600mA
Construction
Primary TypeMagnetic-focus and deflection
Envelope12-Inch Round Glass
Base MaterialSmall-shell Duodecal 5-Pin
Sections1
Filament / Heater
Heater NotesHeater current is 0.6 Amperes nominal
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 2 Voltage410 V
Grid 1 Voltage-125 V
H-C Voltage140 V
Audio Performance
Key Features
- Magnetic focus
- Magnetic deflection
- 54-degree deflection angle
- Gray faceplate
- Ion-trap gun
- External conductive coating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 11000V | - | - | - | - |
Application Notes
The 12LP4-A is an all-glass picture tube for television applications. It features a gray faceplate to increase contrast and an external conductive coating that acts as a filter capacitor when grounded.
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