Tube-number record
21/03TB
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BrandFERRANTI
ClassTelevision Monitor Tube
BaseDuodecal
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
H-C Voltage200 V
Audio Performance
Key Features
- Metal backed screen
- External conductive coating
- Low voltage electrostatic focus
- Rectangular faceplate
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Television Monitoring | 14000 V | — | — | — | — |
Application Notes
The external conductive coating may be used for E.H.T. smoothing. The grid should never be positive with respect to the cathode except immediately after switching off.
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