Tube-number record
20HP4-A/20LP4
0 archive entries
20HP4-A/20LP4 is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand General Electric, year 1954, construction Rectangular Glass, base Plastic, socket Duodecal, and maximum plate voltage 16000 V. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassCathode-Ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeRectangular Glass
EnvelopeGlass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesHeater current 0.6A +/- 10%
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 14000 V | — | — | — | — |
Application Notes
An external conductive coating serves as a filter capacitor when grounded. If operated above 16kV, x-ray radiation shielding may be necessary.
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