LB20
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BrandFernseh GmbH
ClassCathode Ray Tube
BaseF7058
Filament12.6V @ 60mA
Construction
Primary TypeIndirectly heated oxide cathode
EnvelopeMetal-coated glass
Base MaterialMetal
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 1 Voltage-350 V
Cathode Current0.1 mA
Audio Performance
Key Features
- Luftwaffenrohre
- Metallic outer coating
- Indirekt geheizte Oxide-Kathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard operation | 12000V | - | - | - | 0.05mA |
Application Notes
The metallic outer coating should be grounded and can be used as a smoothing capacitor for the anode voltage.
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