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

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Tube-number record

1400B

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BrandThe M-O Valve Co. Ltd.
ClassCathode Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 500 mA

Construction

Primary TypeDisplay / CRT
Envelope14 cm rectangular flat faced
SectionsSingle gun

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage13500 V
Grid 2 Voltage2000 V
Grid 1 Voltage200 V
H-C Voltage150 V

Audio Performance

Key Features
  • Aluminised screen
  • Mesh p.d.a.
  • Side connected deflector plates
  • Flat faced

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Oscilloscope12000 V————

Application Notes

The tube should not be supported by the base alone. Preferably held in a resilient mask at the screen and by a clamp round the magnetic shield.

Datasheets

Datasheet: 1400B.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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