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

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Tube-number record

3ADP-

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BrandDu Mont
ClassCathode-ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeJ24ZA1
Base MaterialSmall Shell
SectionsSingle beam

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage3000 V
Plate Dissipation6 W
Grid 2 Voltage6000 V
Grid 1 Voltage-200 V
H-C Voltage180 V

Audio Performance

Key Features
  • Flat face
  • Post-acceleration
  • Restricted deflection area
  • High light output
  • Tight-tolerance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Post-Accelerator Operation2000 V————

Application Notes

The Du Mont Type 3ADP- is designed for high deflection sensitivity and small spot size. No appreciable focus electrode current is required. Deflector and anode leads are brought out through the bulb wall for maximum insulation.

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