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25QP20

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BrandTESLA
ClassCathode Ray Tube (CRT)
BaseLoctal 8-pin
Filament6.3V @ 600mA

Construction

Primary TypePentode CRT with Ion Trap
EnvelopeGlass
Base MaterialMetal
SectionsSingle

Filament / Heater

MaterialOxide
Warm-up Time40s
Heater NotesIndirectly heated, AC or DC

Absolute Maximum Ratings

Plate Voltage10000 V
Grid 1 Voltage-150 V
Cathode Current0.05 mA
H-C Voltage125 V

Audio Performance

Key Features
  • Magnetic deflection
  • Magnetic focusing
  • Ion trap
  • Smoked glass faceplate
  • Spherical faceplate
  • White phosphor
  • Medium persistence

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
6kV Operation6000V----
8kV Operation8000V----

Application Notes

Television CRT; outer surface of cone is covered with a conductive graphite layer and must always be grounded in operation. Recommend horizontal mounting position.

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