Tube-number record
27RP4
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BrandGeneral Electric
ClassCathode-Ray Tube
BaseDuodecal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesCathode-heater potential should not exceed limits specified.
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage500 V
Grid 1 Voltage125 V
H-C Voltage410 V
Audio Performance
Key Features
- Magnetic focus
- Magnetic deflection
- External conductive coating
- Aluminized screen
- Gray faceplate
- Ion-trap gun
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard operation | 16000 V | — | — | — | — |
Application Notes
The electron gun is designed for use with an external single-field ion-trap magnet. Protective face-viewing window may be necessary for X-ray protection at voltages above 16kV.
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