Tube-number record
23FP4
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BrandWestinghouse
ClassTelevision Picture Tube
BaseCRT base (B7 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Glass
Base MaterialPlastic
Sections1
Filament / Heater
Warm-up Time11s
Heater NotesHeater current tolerance is +/- 60 mA
Absolute Maximum Ratings
Plate Voltage22000 V
Grid 2 Voltage550 V
Grid 1 Voltage-154 V
H-C Voltage200 V
Audio Performance
Key Features
- 114° Magnetic Deflection
- Electrostatic Focus
- Aluminized Screen
- Short Neck Length
- Gray Filter Glass
- No Ion Trap
- Spherical Faceplate
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Drive Service | 14000 V | — | — | — | 0.15 mA |
| Cathode Drive Service | 14000 V | — | — | — | — |
Application Notes
Operation with voltages in excess of 16kV may require shielding to limit radiation of very soft x-rays.
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