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

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Tube-number record

M.V.S./PEN.

0 archive entries

M.V.S./PEN. is a tube type in the TubeDatabase archive (class: Variable Mu H.F. Pentode). Recorded specifications: brand Cossor, construction Pentode, socket 7-pin (non-miniature), and maximum plate voltage 200 V. The archive does not yet hold a photographed example of this type.

BrandCossor
ClassVariable Mu H.F. Pentode
Base7-pin (non-miniature)
Filament4 V @ 1 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage200 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Va 200, Vag 100, Vg 0200 V3000———
Va 200, Vag 100, Vg -1.5200 V2200———

Application Notes

Particularly useful as a high frequency or intermediate frequency amplifier. Suppressor grid is brought out to a separate pin in the seven-pin base type. Also available with five-pin base where the suppressor grid is connected to cathode.

Filters

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Manufacturers

Brands

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    Grid 2 Voltage100 V
    Grid 1 Voltage-20 V

    Audio Performance

    Key Features
    • Variable-mu characteristic
    • Separate suppressor grid pin (7-pin base)
    • Manual or automatic volume control
    • Frequency changing capability
    • Decrease gain and flatten tuning by negative suppressor grid potential