Tube-number record
21ZP4-A
0 archive entries
21ZP4-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 5-Pin, JETEC No. B5-57, 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
EnvelopeJ170-B1
Base MaterialSmall-shell Duodecal 5-Pin, JETEC No. B5-57
Sections1
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Magnetic Focus | 16000 V | — | — | — | — |
Application Notes
The electron gun is designed for use with an external single-field ion-trap magnet. Gray faceplate increases picture contrast.
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