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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

17/03TB

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BrandFerranti
ClassMonitor Tube
BaseDuodecal
Filament6.3 V @ 0.3 mA

Construction

Primary TypeDisplay / CRT
EnvelopeRectangular 17 inch diagonal
Base MaterialPlastic
Sections1

Filament / Heater

Heater NotesSurge heater voltage should not exceed 9.5V r.m.s. during series operation.

Absolute Maximum Ratings

Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage200 V

Audio Performance

Key Features
  • Metal backed screen
  • Rectangular face
  • External conductive coating for E.H.T. smoothing
  • Television monitoring equipment

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Monitor Operation18000 V————

Application Notes

The modulator should never be positive with respect to the cathode, except briefly after switching off (+1V max).

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