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

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3NP4 vacuum tube outline illustration

Tube-number record

3NP4

0 archive entries

3NP4 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand North American Philips Co., Inc., construction Other / special, socket 5-pin, and maximum plate voltage 26000 V. The archive does not yet hold a photographed example of this type.

BrandNorth American Philips Co., Inc.
ClassCathode Ray Tube
Base5-pin
Filament6.3 V @ 600 mA

Construction

Primary TypeOther / special
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage26000 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Magnetic Deflection25000 V———0.004 mA

Application Notes

The 3NP4 is a magnetic focus and magnetic deflection projection tube designed primarily for use with reflective optical systems. It has an external conductive coating.

Datasheets

Datasheet: 3NP4.pdf

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

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    Grid 1 Voltage-125 V
    H-C Voltage125 V

    Audio Performance

    Key Features
    • Projection Television Tube
    • Electromagnetic Focus
    • Electromagnetic Deflection
    • External Conductive Coating