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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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Tube-number record

DOUBLE DIODE OUTPUT PENTODE

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DOUBLE DIODE OUTPUT PENTODE is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Mullard, construction Pentode, socket Octal, maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.

BrandMullard
ClassOutput Pentode
BaseOctal
Filament
44.9 V @ 0.2 mA

Construction

Primary TypePentode
EnvelopeST
SectionsDouble Diode Output Pentode

Filament / Heater

Heater NotesSuitable for DC/AC operation

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current70 mA
H-C Voltage125 V

Audio Performance

Typical THD10%
Power Output4 W
Key Features
  • High-sensitivity
  • DC/AC operation
  • Double diode combined

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A200 V800035000—45 mA

Application Notes

High-sensitivity output pentode for use in A.C. mains-operated equipment, combined with twin diodes.

Filters

0 tubes found

Manufacturers

Brands

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