Tube-number record
12KP4-A
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BrandGeneral Electric
ClassCathode-Ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJ99 / Y2Al
Base MaterialSmall-shell Duodecal
Sections1
Filament / Heater
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
- Aluminized screen
- Gray faceplate
- Direct-view all-glass picture tube
- External conductive coating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operating Conditions | 11000 V | — | — | — | — |
Application Notes
The electron gun does not require an external ion-trap magnet. An external conductive coating serves as a filter capacitor when grounded.
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