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DOUBLE DIODE OUTPUT PENTODE

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BrandMullard
ClassOutput Pentode
BaseOctal
Filament44.9V @ 0.2mA

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 A200V800035000-45mA

Application Notes

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

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