Tube-number record
21XP4-A
0 archive entries
21XP4-A is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand General Electric, year 1954, construction Display / CRT, base Small-shell Duodecal, socket Duodecal, and maximum plate voltage 18000 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 TypeDisplay / CRT
EnvelopeGlass
Base MaterialSmall-shell Duodecal
Sections1
Filament / Heater
Heater Notes0.6 Amperes +/- 10%
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 16000 V | — | — | — | — |
Application Notes
Anode, grid-No. 3 and grid-No. 5 which are connected together within the tube are referred to herein as anode. Focusing electrode voltage range -0.4 to +2.2 percent of anode voltage.
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