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

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32A8 vacuum tube outline illustration

Tube-number record

32A8

0 archive entries

32A8 is a tube type in the TubeDatabase archive (class: High-Mu Triode, Power Pentode). Recorded specifications: construction Multi-section, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 7 W. The archive does not yet hold a photographed example of this type.

ClassHigh-Mu Triode, Power Pentode
BaseNoval (B9A)
Filament32 V @ 150 mA

Construction

Primary TypeMulti-section
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesDesigned for transformer-less radio receivers

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Unit100 V2900—703.5 mA
Pentode Unit100 V680015000—26 mA

Application Notes

The D.C. component of heater-cathode voltage must not exceed 100 volts when heater is positive with respect to cathode.

Datasheets

Datasheet: 32A8.pdf

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

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Manufacturers

Brands

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    Plate Dissipation7 W
    Grid 2 Voltage250 V
    Cathode Current50 mA
    H-C Voltage200 V

    Audio Performance

    Typical THD10%
    Power Output1.05 W
    Key Features
    • Transformer-less radio receivers
    • AF amplifier
    • Output tube
    • Noval 9-Pin base