Tube-number record
21DSP4
0 archive entries
21DSP4 is a tube type in the TubeDatabase archive (class: Picture Tube). Recorded specifications: brand RCA, year 1959, construction Display / CRT, socket Duodecal, and maximum plate voltage 20000 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPicture Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Glass
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage20000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode-Drive Service | 18000 V | — | — | — | — |
Application Notes
Cathode drive is the operating condition in which the video signal varies the cathode potential with respect to grid No. 1.
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