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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

F 8072

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BrandCSF
ClassCathode Ray Tube
BaseDiheptal
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic/Glass
SectionsSingle beam

Filament / Heater

Heater NotesFilament indirect

Absolute Maximum Ratings

Plate Voltage13200 V
Grid 2 Voltage2200 V
Grid 1 Voltage-220 V
Cathode Current0.5 mA
H-C Voltage140 V

Audio Performance

Key Features
  • Aluminized screen
  • High writing speed
  • High sensitivity
  • Low inter-electrode capacitance
  • Low distortion
  • Electrostatic deflection
  • Electrostatic focusing

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Example Operation10000 V———0.005 mA

Application Notes

Recommended to use Mu-metal shielding to avoid external magnetic field interference. Post-acceleration voltage (Grid 7) should not be less than 6000V for optimal brightness.

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