Tube-number record
3DP1-A
0 archive entries
3DP1-A is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand RCA, construction Other / special, base Medium Shell, socket Diheptal, and maximum plate voltage 2200 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassCathode-Ray Tube
BaseDiheptal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeOther / special
Envelope3-Inch Bulb
Base MaterialMedium Shell
SectionsSingle beam with radial deflection electrode
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 1500V Operation | 1500 V | — | — | — | — |
| 2000V Operation | 2000 V | — | — | — | — |
Application Notes
The radial-deflecting electrode allows for polar coordinate observation. Designed so anode No. 1 takes essentially no current to allow bleeder systems requiring very little current.
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