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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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AL3 vacuum tube outline illustration

Tube-number record

AL3

0 archive entries

AL3 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Philips, construction Pentode, maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassPentode
Filament4 V @ 1.85 mA

Construction

Primary TypePentode

Filament / Heater

Heater NotesIndirect AC

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A250 V900050000—36 mA

Filters

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Manufacturers

Brands

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    Grid 1 Voltage-1.3 V
    Cathode Current55 mA
    H-C Voltage50 V

    Audio Performance

    Power Output4.5 W