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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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M31-131W vacuum tube outline illustration

Tube-number record

M31-131W

0 archive entries

M31-131W is a tube type in the TubeDatabase archive (class: Monitor Tube). Recorded specifications: brand Philips, construction Display / CRT, socket CRT base (B8H), and maximum plate voltage 18000 V. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassMonitor Tube
BaseCRT base (B8H)
Filament6.3 V @ 300 mA

Construction

Primary TypeDisplay / CRT
Envelope31 cm-diagonal rectangular
Sections1

Filament / Heater

Heater NotesIndirect by a. c. or d. c. ;parallel supply

Absolute Maximum Ratings

Plate Voltage18000 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Monitor Operation16000 V———0.05 mA

Application Notes

Primarily intended for use as a monitor or display tube. The tube marking and warning labels are on the side of the cone opposite the final accelerator contact.

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Manufacturers

Brands

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    Grid 2 Voltage800 V
    Grid 1 Voltage-150 V
    H-C Voltage250 V

    Audio Performance

    Key Features
    • 900 lines resolution
    • Metal backed phosphor
    • Integral protection
    • Electrostatic focusing
    • Magnetic deflection