27MP4
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BrandTUNG-SOL
ClassCathode Ray Tube
BaseB5-57
Filament6.3V @ 0.6mA
Construction
Primary TypeRectangular Metal Construction
EnvelopeMetal Shell Lip
SectionsSingle
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage125 V
H-C Voltage180 V
Audio Performance
Key Features
- Aluminized screen
- Magnetic focus & deflection
- Frosted filterglass faceplate
- External single field ion trap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 16000V | - | - | - | - |
Application Notes
Brilliance and definition decrease with decreasing collector voltage. Collector voltage should not be less than 16,000 volts. Shielding of X-ray radiation may be necessary when anode exceeds 16 KV.
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