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

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Tube-number record

M38-200

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ClassCathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 190 mA

Construction

Primary TypeDisplay / CRT
Envelope38 cm, 70 degree deflection angle, metal-backed screen
SectionsSingle

Filament / Heater

Heater NotesIndirect heating by AC or DC; Heater current liable to be modified to 240 mA

Absolute Maximum Ratings

Plate Voltage20000 V
Grid 2 Voltage1200 V
Grid 1 Voltage-140 V
H-C Voltage250 V

Audio Performance

Key Features
  • Very high resolution cathode-ray tube
  • Rim band for implosion protection
  • Metal-backed screen
  • Internal magnetic correction for astigmatism

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Recommended18000 V———0.03 mA

Application Notes

Eminently suitable for full page document display and computer-aided design.

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