Tube-number record
TMA. 408
0 archive entries
TMA. 408 is a tube type in the TubeDatabase archive (class: Miniaturized Scan Converter Storage Tube). Recorded specifications: brand Thomson-CSF, construction Other / special, socket Noval (B9A), and maximum plate voltage -7000 V. The archive does not yet hold a photographed example of this type.
BrandThomson-CSF
ClassMiniaturized Scan Converter Storage Tube
BaseNoval (B9A)
Filament6.3 V @ 600 mA
Construction
Primary TypeOther / special
EnvelopeGlass/Metal
SectionsWriting gun (electrostatic focus), Reading gun (electromagnetic focus)
Filament / Heater
Heater NotesWriting heater insulated for 8000 V; Reading heater insulated for 2000 V
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Writing Gun | -6000 V | — | — | — | — |
| Reading Gun | -1200 V | — | — | — | — |
Application Notes
Commonly used in Air Traffic Control for P.P.I. radar scan to T.V. scan conversion, signal to noise enhancement, and remote transmission of radar information.
Datasheets
Datasheet: TMA408.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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