27EP4
0 Tubes in archive
BrandGeneral Electric
ClassCathode-Ray Tube
BaseSmall-shell Duodecal 5-Pin
Filament6.3V @ 600mA
Construction
Primary TypeCathode-Ray Tube
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater Notes0.6 Amperes +/- 10%
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage500 V
Grid 1 Voltage-125 V
H-C Voltage180 V
Audio Performance
Key Features
- 90-degree deflection angle
- Aluminized screen
- Spherical gray faceplate
- Ion-trap gun
- Magnetic-focus
- Magnetic-deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Magnetic-focus and deflection | 16000V | - | - | - | - |
Application Notes
The 27EP4 is a magnetic-focus and deflection, direct-view all-glass picture tube which provides a 24- by 18-inch picture for television applications.
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