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

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EL86 vacuum tube outline illustration

Tube-number record

EL86

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EL86 is a tube type in the TubeDatabase archive (class: Pentode de puissance). Recorded specifications: brand Mazda Belvu CIFTE, year 1968, construction Pentode, base Glass, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 12 W. The archive does not yet hold a photographed example of this type.

BrandMazda Belvu CIFTE
ClassPentode de puissance
BaseNoval (B9A)
Filament6.3 V @ 760 mA

Construction

Primary TypePentode
EnvelopeA22-4
Base MaterialGlass
Sections1

Filament / Heater

Heater NotesChauffage indirect, alimentation en parallèle

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Nominal170 V1100026000870 mA
Amplificateur A.F. - classe A200 V———65 mA
Amplificateur push-pull A.F. - classe A.B.250 V———55 mA

Application Notes

Pour l'utilisation en amplificateur de balayage images, la résistance du circuit de grille maximale est de 2 MOhms. En aucun cas la tension de polarisation de la grille n° 1 ne doit être supérieure à -1 volt.

Datasheets

Datasheet: EL86.pdf

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

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    Plate Voltage250 V
    Plate Dissipation12 W
    Grid 2 Voltage250 V
    Cathode Current100 mA
    H-C Voltage200 V

    Audio Performance

    Typical THD10%
    Power Output5.3 W
    Key Features
    • Amplificateur A.F.
    • Amplificateur de balayage images
    • Chauffage indirect