Tube-number record
3JP-
0 archive entries
3JP- is a tube type in the TubeDatabase archive (class: Cathode-ray Tube). Recorded specifications: construction Display / CRT, base Medium Shell Diheptal 12-Pin, socket CRT base (B12 family), maximum plate voltage 2000 V, and maximum plate dissipation 6 W. The archive does not yet hold a photographed example of this type.
ClassCathode-ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass, 3-1/16" bulb diameter
Base MaterialMedium Shell Diheptal 12-Pin
SectionsSingle gun
Filament / Heater
Heater NotesHeater current 0.6A +/- 10%
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation6 W
Grid 2 Voltage2000 V
Grid 1 Voltage-200 V
H-C Voltage125 V
Audio Performance
Key Features
- Extremely high current gun
- High excitation of the screen
- Intensifier electrode
- Negligible focusing electrode current
- High altitude insulation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 1500V Accelerator | 1500 V | — | — | — | 0.01 mA |
| 4000V Accelerator | 2000 V | — | — | — | 0.01 mA |
Application Notes
Designed for oscillographic applications requiring high light output and good deflection sensitivity. Product of Anode No. 2 voltage and average current should be limited to 6 watts.
0 results