AS 17-21
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BrandITT
ClassDark Trace Storage Tube
BaseDuodecal (Twelve-sided) with 7 prongs
Filament6.3V @ 0.3mA
Construction
Primary TypeTetrode with Unit Lens
EnvelopeAll-glass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesIndirectly heated oxide cathode
Absolute Maximum Ratings
Plate Voltage14000 V
Grid 2 Voltage300 V
Grid 1 Voltage-150 V
Cathode Current0.5 mA
H-C Voltage200 V
Audio Performance
Key Features
- Electrostatic focusing
- Magnetic deflection
- Dark trace on light background
- Erasable via quenching voltage
- Viewable in normal light
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 10000V | - | - | - | - |
Application Notes
The image can be erased within 10 seconds by applying a quenching voltage. Suitable for radar display units and image transmission systems with slow image sequence.
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