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

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Tube-number record

7AMP

0 archive entries

7AMP is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand Du Mont, construction Display / CRT, base Medium Shell Diheptal, socket CRT base (B12 family), maximum plate voltage 11500 V, and maximum plate dissipation 6 W. The archive does not yet hold a photographed example of this type.

BrandDu Mont
ClassCathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialMedium Shell Diheptal
Sections2

Filament / Heater

Heater NotesHeater current tolerance +/- 10%

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation4000 V————

Application Notes

The two second anodes and the shield, normally tied together, have separate connections for astigmatism control and special applications. The deflection electrode and acceleration electrode connections are brought out through the bulb wall to minimize lead inductance.

Filters

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Manufacturers

Brands

    0 results
    Plate Voltage11500 V
    Plate Dissipation6 W
    Grid 2 Voltage3850 V
    Grid 1 Voltage-200 V
    H-C Voltage180 V

    Audio Performance

    Key Features
    • 7-inch diagonal square face
    • Two beam
    • Electrostatic deflection
    • Electrostatic focus
    • Post accelerator
    • Separate connections for astigmatism control