27XP4
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BrandSylvania
ClassTelevision Picture Tube
BaseB6-203
Filament6.3V @ 0.6mA
Construction
Primary TypeCathode Ray Tube
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 | 18000V | - | - | - | - |
| Cathode Drive Service | 18000V | - | - | - | - |
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.
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