Tube-number record
LS50
0 archive entries
LS50 is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand Telefunken, construction Pentode, base Metal/Ceramic, socket Special / none, maximum plate voltage 1000 V, and maximum plate dissipation 12 W. The archive does not yet hold a photographed example of this type.
BrandTelefunken
ClassPower Pentode
BaseSpecial / none
Filament12.6 V @ 550 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialMetal/Ceramic
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated oxide cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| NF-Endverstärker Eintakt-A | 250 V | 15000 | — | — | 72 mA |
| NF-Endverstärker Gegentakt-AB (300V) | 300 V | — | — | — | 60 mA |
| HF-Senderverstärker (B-Betrieb) | 600 V | — | — | — |
Application Notes
For pulse applications, the heater must be switched on for at least 1 minute before applying other voltages.
Datasheets
Datasheet: LS50.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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