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PEN40DD

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BrandMullard
ClassDouble Diode Output Pentode
Base7-pin
Filament4V @ 1.9mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsDouble Diode Output Pentode

Filament / Heater

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation10 W
Grid 2 Voltage250 V
H-C Voltage175 V

Audio Performance

Key Features
  • Double diode for detection
  • Output pentode for power amplification

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Amplifier200V8000--45mA

Application Notes

Commonly used as a combined detector, AVC, and output stage in radio receivers.

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