Tube-number record
F8055
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BrandThomson-CSF
ClassDirect View Storage Tube
BaseMagnal
Filament6.3 V @ 800 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass, short-type 8 inch length
Base MaterialPlastic/Ceramic
SectionsDual-gun (flood and write guns)
Filament / Heater
Heater NotesFlood heater current 800 mA; Write heater current 600 mA.
Absolute Maximum Ratings
Plate Voltage9000 V
Grid 2 Voltage2900 V
Grid 1 Voltage-200 V
Audio Performance
Key Features
- Short-type 8-inch length
- Electrostatically focused writing gun
- Electromagnetically deflected writing gun
- High brightness (1200 Ft Lamberts)
- Designed for airborne equipments
- Severe mechanical vibration resistant
- Operates unpressurized at high altitude
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Writing Gun | -1200 V | — | — | — | — |
| Flooding Gun | 7500 V | — | — | — | — |
Application Notes
Writing gun cathode is at high D.C. potential. Magnetic shielding (mumetal) about 1 mm thick is required. Must be handled and transported with screen upwards.
Datasheets
Datasheet: F8055.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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