Tube-number record
23NP4
0 archive entries
23NP4 is a tube type in the TubeDatabase archive (class: Picture Tube). Recorded specifications: brand RCA, year 1960, construction Display / CRT, base Glass, socket CRT base (B7 family), and maximum plate voltage 22000 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPicture Tube
BaseCRT base (B7 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesHeater warm-up time: 11 seconds
Absolute Maximum Ratings
Plate Voltage22000 V
Grid 2 Voltage70 V
H-C Voltage450 V
Audio Performance
Key Features
- Aluminized Screen
- Low-Voltage Electrostatic Focus
- No Ion-Trap Magnet Required
- Cathode-Drive Operation
- 114° Magnetic Deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode-Drive Service | 16000 V | — | — | — | 0.2 mA |
Application Notes
The 23NP4 is a directly viewed, rectangular glass picture tube featuring a relatively flat compound radius faceplate. It uses a low-grid-No.2-voltage gun for improved cathode-drive sensitivity.
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