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A47-18W

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BrandMullard
ClassTelevision Tube
BaseB12A
Filament6.3V @ 300mA

Construction

Primary TypeCRT
EnvelopeReinforced Glass
SectionsSingle

Filament / Heater

Heater NotesSuitable for series or parallel operation. Surge voltage must not exceed 9.5 Vrms.

Absolute Maximum Ratings

Plate Voltage18000 V
Grid 2 Voltage700 V
Grid 1 Voltage-150 V
H-C Voltage250 V

Audio Performance

Key Features
  • Metal backed screen
  • Reinforced envelope
  • Safety screen not required
  • Direct viewing
  • External conductive coating

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Visual extinction (Va1=400V)18000V---0.1mA
Visual extinction (Va1=500V)18000V---0.1mA

Application Notes

The tube is electrically identical to the AW47-91. External conductive coating M must be earthed. Metal band B must be connected to chassis via a 2 MOhm resistor.

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