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Tube Database (7,341 tube types · 1,270 archive entries)

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TH 9895 vacuum tube outline illustration

Tube-number record

TH 9895

0 archive entries

TH 9895 is a tube type in the TubeDatabase archive (class: Vidicon Memory Tube). Recorded specifications: brand THOMSON-CSF, construction Display / CRT, socket Subminiature, and maximum plate voltage 400 V. The archive does not yet hold a photographed example of this type.

BrandTHOMSON-CSF
ClassVidicon Memory Tube
BaseSubminiature
Filament6.3 V @ 150 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Sections1

Filament / Heater

Heater NotesTolerance +/- 10%

Absolute Maximum Ratings

Plate Voltage400 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Effacement (Erasing)400 V————
Inscription (Writing)60 V————
Lecture (Reading)20 V———0.0001 mA

Application Notes

Particularly suited for long-duration visualization or repeated display of transient images.

Datasheets

Datasheet: TH9895.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Grid 2 Voltage300 V
    Grid 1 Voltage-100 V

    Audio Performance

    Key Features
    • Non-destructive readout
    • 1 inch diameter
    • Short writing and erasing times
    • High resolution (50% modulation at 600 lines)