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

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T977D vacuum tube outline illustration

Tube-number record

T977D

0 archive entries

T977D is a tube type in the TubeDatabase archive (class: Radar Tube). Recorded specifications: brand English Electric Valve Co. Ltd., construction Display / CRT, base Plastic, socket Duodecal, and maximum plate voltage 15500 V. The archive does not yet hold a photographed example of this type.

BrandEnglish Electric Valve Co. Ltd.
ClassRadar Tube
BaseDuodecal
Filament6.3 V @ 300 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic
SectionsSingle

Filament / Heater

Heater NotesSuitable for series or parallel operation

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Radar Display15000 V———0.05 mA

Application Notes

Specifically designed for radar displays with transistor or valve amplifiers; the T977D version is optimized for flicker-free computer read-out at low repetition frequencies.

Datasheets

Datasheet: T977D.pdf

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

Filters

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Manufacturers

Brands

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    Plate Voltage15500 V
    Grid 2 Voltage600 V
    Grid 1 Voltage-250 V
    Cathode Current0.15 mA
    H-C Voltage200 V

    Audio Performance

    Key Features
    • 12-inch diameter
    • Flicker-free images
    • Improved resolution
    • High E.H.T. voltage
    • Aluminised screen