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

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Tube-number record

7492

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7492 is a tube type in the TubeDatabase archive (class: Double Triode). Recorded specifications: brand Brimar, construction Dual triode, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.

BrandBrimar
ClassDouble Triode
BaseNoval (B9A)
Filament12.6 V @ 0.15 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesPure tungsten heater; center-tap on pin 9

Absolute Maximum Ratings

Plate Voltage300 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Each Section250 V5500—6010 mA

Application Notes

Independent sections for use in both RF and computer applications. Designed for long periods of operation under cut-off conditions.

Datasheets

Datasheet: 7492.pdf

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

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    Plate Dissipation2 W
    Cathode Current22 mA
    H-C Voltage100 V

    Audio Performance

    Key Features
    • High slope
    • Special rugged electrode construction
    • Cathode interface resistance inhibited
    • Pure tungsten heater
    • Low leakage levels