7AQP4
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BrandAllen B. Du Mont Laboratories, Inc.
ClassIndustrial Cathode Ray Tube
BaseMiniature E9-37
Filament6.3V @ 300mA
Construction
Primary TypeCathode Ray Tube
EnvelopeClear spherical faceplate
Base MaterialPlastic (Miniature Base)
SectionsSingle
Filament / Heater
Heater NotesLow heater current
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 2 Voltage770 V
Grid 1 Voltage180 V
H-C Voltage180 V
Audio Performance
Key Features
- Space Saving Tube
- Light Weight
- Short Overall Length
- Small Neck Diameter
- Miniature Base
- Low Heater Current
- Metallized Screen
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard operation | 10000V | - | - | - | - |
Application Notes
The P4 phosphor provides a white fluorescence with short-to-medium persistence. Used in miniaturized equipment and airborne radar displays.
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