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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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21CXP4 vacuum tube outline illustration

Tube-number record

21CXP4

0 archive entries

21CXP4 is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand The Rauland Corporation, year 1957, construction Display / CRT, base Small Shell Duodecal, socket Duodecal, and maximum plate voltage 22000 V. The archive does not yet hold a photographed example of this type.

BrandThe Rauland Corporation
ClassCathode-Ray Tube
BaseDuodecal
Filament6.3 V @ 0.64 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGray Filter Glass
Base MaterialSmall Shell Duodecal
SectionsSingle

Filament / Heater

Heater Notes0.64 +/- 10% amperes

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Cathode Drive18000 V————

Application Notes

Specifically intended for cathode drive television applications. External conductive coating serves as filter capacitor when grounded.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Voltage22000 V
    Grid 2 Voltage70 V
    Grid 1 Voltage150 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Electrostatic focus
    • Magnetic deflection
    • Direct-view picture tube
    • No external ion trap magnet required
    • Metal-backed screen
    • External conductive coating