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MW 31-74

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BrandPhilips
ClassTelevision Picture Tube
BaseDuodecal
Filament6.3V @ 300mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass with filterglass face plate
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated by A.C. or D.C.; series or parallel supply. In a series chain, switch-on voltage must not exceed 8.5 V.

Absolute Maximum Ratings

Plate Voltage11000 V
Grid 2 Voltage410 V
Cathode Current5 mA
H-C Voltage200 V

Audio Performance

Key Features
  • Ion trap
  • Filterglass face plate
  • Magnetic deflection
  • Magnetic focusing
  • Indirect heating

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation 17000V----
Typical Operation 29000V----

Application Notes

Identical to type MW 31-16 except for the filterglass face plate. The anode connection must be in a vertical plane through the axis of the tube. Power supply should be limited-energy type to limit short-circuit current to 5 mA.

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