Tube-number record
7CP1
0 archive entries
7CP1 is a tube type in the TubeDatabase archive (class: Oscillograph Tube). Recorded specifications: brand RCA (Radio Corporation of America), year 1946, construction Display / CRT, base Plastic, socket Octal, and maximum plate voltage 8000 V. The archive does not yet hold a photographed example of this type.
BrandRCA (Radio Corporation of America)
ClassOscillograph Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Anode No.2 = 4000V | 4000 V | — | — | — | — |
| Anode No.2 = 7000V | 7000 V | — | — | — | — |
Application Notes
Brilliance and definition decrease with decreasing anode-No.2 voltage; voltage should not be less than 4000 volts. Visual extinction supply should be adjustable to +/- 50% of indicated value.
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