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

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4BP15 vacuum tube outline illustration

Tube-number record

4BP15

0 archive entries

4BP15 is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand Philco Corporation, construction Other / special, socket Octal, and maximum plate voltage 25000 V. The archive does not yet hold a photographed example of this type.

BrandPhilco Corporation
ClassCathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA

Construction

Primary TypeOther / special
EnvelopeGlass
Sections1

Filament / Heater

Heater NotesAC/DC Operation

Absolute Maximum Ratings

Plate Voltage25000 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Flying-spot scanner25000 V———0.15 mA

Application Notes

Intended primarily for use as the scanner in a flying-spot video-signal generator.

Datasheets

Datasheet: 4BP15.pdf

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

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    Grid 2 Voltage25000 V
    Grid 1 Voltage-350 V
    H-C Voltage175 V

    Audio Performance

    Key Features
    • Extremely uniform phosphor screen
    • Face plate optical quality
    • 20 inch radius of curvature
    • External conductive coating on neck
    • External insulating coating on bulb cone