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90EY4F

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ClassOscilloscope Tube
BaseB.12.D
Filament4V @ 1000mA

Construction

Primary TypeCathode Ray Tube
EnvelopeFlat faced bulb
SectionsSingle gun

Filament / Heater

Absolute Maximum Ratings

Plate Voltage5000 V

Audio Performance

Key Features
  • Flat faced bulb
  • Electrostatic focusing
  • Electrostatic deflection
  • Yellow fluorescence
  • Long afterglow persistence

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Condition 1 (High Voltage)4000V----
Condition 2 (Low Voltage)2000V----

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