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

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Tube-number record

20L1

0 archive entries

20L1 is a tube type in the TubeDatabase archive (class: Television Twin Triode). Recorded specifications: brand Ediswan Mazda, construction Dual triode, socket Rimlock, maximum plate voltage 250 V, and maximum plate dissipation 3 W. The archive does not yet hold a photographed example of this type.

BrandEdiswan Mazda
ClassTelevision Twin Triode
BaseRimlock
Filament12.6 V @ 200 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesIndirectly heated for series operation

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical200 V28005714.291610 mA

Datasheets

Datasheet: 20L1.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 Dissipation3 W
    H-C Voltage250 V

    Audio Performance

    Key Features
    • Indirectly heated
    • Series operation
    • Replacement type
    • Television twin triode