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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

21EZP4

0 archive entries

BrandLe Cathoscope Français
ClassCathode Ray Tube
BaseCRT base (B7 family)

Construction

Primary TypeElectrostatic Focus, Magnetic Deflection
EnvelopeGlass
Sections1

Filament / Heater

Warm-up Time11s

Absolute Maximum Ratings

Plate Voltage18000 V
Grid 2 Voltage650 V
H-C Voltage180 V

Audio Performance

Key Features
  • Electrostatic focus
  • Aluminized screen
  • 110 degree deflection angle
  • Non-ion trap gun

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Cathode drive service16000 V————
Cathode drive service18000 V————

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