Tube-number record
5ALP1, 5ALP4, 5ALP7, 5ALP11
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BrandNational Union
ClassCathode Ray Tube
BaseNoval (B9A)
Filament6.3 V @ 200 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater Notesac or dc; power consumption 1.26 watts
Absolute Maximum Ratings
Plate Voltage10000 V
Grid 1 Voltage-250 V
Audio Performance
Key Features
- Daylight viewing
- Standard 9-pin miniature base
- Minimum length design
- 5ALP1: Green phosphor, Medium persistence
- 5ALP4: White phosphor, Medium persistence
- 5ALP7: Blue/Yellow phosphor, Long persistence
- 5ALP11: Blue phosphor, Short persistence
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard | 8000 V | — | — | — | 0.5 mA |
Application Notes
Developed to provide a five inch cathode-ray tube of minimum length and maximum beam current for airborne or small compact equipments.
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