Tube-number record
LB 13/40
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BrandTelefunken
ClassCathode Ray Tube
Base8-pin
Filament4 V @ 1 mA
Construction
Primary TypeOther / special
EnvelopeGlass
Filament / Heater
Heater NotesNormalheizspannung 4V, indirekt geheizte Oxydkathode
Absolute Maximum Ratings
Plate Voltage4000 V
Grid 1 Voltage-130 V
Cathode Current0.035 mA
Audio Performance
Key Features
- Luftfahrtrohre
- Elektromagnetisch-elektrostatische Polar-Koordinatenschreibung
- Aluminium-Mus-Metallgehäuse
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Polar-Koordinatenschreibung | 4000 V | — | — | — | — |
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