Tube-number record
21CGP4
0 archive entries
21CGP4 is a tube type in the TubeDatabase archive (class: Cathode Ray Picture Tube). Recorded specifications: brand Tung-Sol, year 1957, construction Display / CRT, base Plastic, socket Duodecal, and maximum plate voltage 20000 V. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassCathode Ray Picture Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Glass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard | 18000 V | — | — | — | — |
Application Notes
Average raster cutoff with grid drive may be calculated: Eglco = .502 * Eg2 + 4.8. Anode voltage should not be less than 14,000 Volts.
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