Tube-number record
27XP4
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BrandSylvania
ClassTelevision Picture Tube
BaseCRT base (B12 family)
Filament6.3 V @ 0.6 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Glass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesHeater warm-up time is 11 seconds.
Absolute Maximum Ratings
Plate Voltage23000 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage200 V
Audio Performance
Key Features
- Electrostatic Focusing
- Magnetic Deflection
- Rectangular Glass Type
- Spherical Faceplate
- Gray Filter Glass
- Aluminized Screen
- No Ion Trap
- Short Neck
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Drive Service | 18000 V | — | — | — | — |
| Cathode Drive Service | 18000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary to protect against possible danger of personal injury from prolonged exposure at close range if this tube is operated at higher than the manufacturer's Maximum Rated Anode Voltage or 16,000 volts.
Datasheets
Datasheet: 27XP4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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