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C21NM

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BrandBRIMAR
ClassTeletube
BaseB12A (DUODECAL)
Filament6.3V @ 300mA

Construction

Primary TypePentode Gun
EnvelopeRectangular 70° deflection
Base MaterialGlass
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage18000 V
Grid 2 Voltage500 V
H-C Voltage180 V

Audio Performance

Key Features
  • Magnetic focus
  • Ion trap
  • Aluminized screen
  • External conductive coating
  • Grey glass faceplate
  • 67% transmission faceplate

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation16000V----

Application Notes

No harmful X-ray radiation is produced below 16 kV. Above 16 kV, shielding may be necessary. The ion-trap magnet should be adjusted to give the brightest picture.

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