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

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Tube-number record

ML-8454

0 archive entries

BrandMachlett
ClassDirect-View Storage Tube
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 0.6 mA

Construction

Primary TypeDisplay / CRT
Envelope5-inch Glass
Base MaterialPotted in Netic Co-Netic magnetic shield
SectionsDual-gun (Write/Flood)

Filament / Heater

Heater NotesFlood and Write gun heaters are 6.3V

Absolute Maximum Ratings

Plate Voltage11000 V
Plate Dissipation10 W
Grid 2 Voltage800 V
Grid 1 Voltage-200 V
H-C Voltage125 V

Audio Performance

Key Features
  • Half-tone image capability
  • Electrostatically focused tetrode write gun
  • Magnetic deflection
  • Integrated magnetic shield
  • High altitude suitability

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Viewing Section11000 V———0.5 mA
Write Gun-2000 V————

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