Tube-number record
AS 17-21
0 archive entries
AS 17-21 is a tube type in the TubeDatabase archive (class: Dark Trace Storage Tube). Recorded specifications: brand ITT, year 1961, construction Tetrode, base Plastic, socket Duodecal, and maximum plate voltage 14000 V. The archive does not yet hold a photographed example of this type.
BrandITT
ClassDark Trace Storage Tube
BaseDuodecal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeTetrode
EnvelopeAll-glass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesIndirectly heated oxide cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 10000 V | — | — | — | — |
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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