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

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9LP7 vacuum tube outline illustration

Tube-number record

9LP7

0 archive entries

9LP7 is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand General Electric, construction Display / CRT, base Wafer, socket Octal, and maximum plate voltage 7700 V. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassCathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialWafer
Sections1

Filament / Heater

Heater NotesAllowable variation +/- 10%

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Operation 14000 V———0.5 mA
Operation 24000 V———0.5 mA
Operation 37000 V———0.5 mA

Application Notes

The center of the undeflected, unfocused spot will fall within a circle of 18mm radius. Cutoff voltage is defined as visual extinction of a stationary focused spot.

Datasheets

Datasheet: 9LP7.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Plate Voltage7700 V
    Grid 2 Voltage330 V
    H-C Voltage125 V

    Audio Performance

    Key Features
    • Magnetic Focusing
    • Magnetic Deflecting
    • Long persistence screen (P7)
    • Metal bulb contact
    Operation 47000 V———0.5 mA