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

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8068 vacuum tube outline illustration

Tube-number record

8068

0 archive entries

8068 is a tube type in the TubeDatabase archive (class: Beam Pentode). Recorded specifications: brand General Electric, construction Beam tetrode / beam power, base B5-149, socket Octal, maximum plate voltage 3500 V, and maximum plate dissipation 35 W. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassBeam Pentode
BaseOctal
Filament6.3 V @ 0.9 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeT12 Glass
Base MaterialB5-149
SectionsSingle

Filament / Heater

Heater NotesCoated Unipotential Cathode

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Average Characteristics3500 V———1 mA
Average Characteristics600 V520054500—36 mA

Application Notes

The 8068 is a beam pentode designed for use as a series regulator in high-voltage power supplies.

Datasheets

Datasheet: 8068.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 Voltage3500 V
    Plate Dissipation35 W
    Grid 2 Voltage250 V
    Cathode Current100 mA
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Series regulator in high-voltage power supplies
    • Any mounting position