Tube-number record
EL500
0 archive entries
EL500 is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand Telefunken, construction Pentode, socket Octal, maximum plate voltage 400 V, and maximum plate dissipation 20 W. The archive does not yet hold a photographed example of this type.
BrandTelefunken
ClassPower Pentode
BaseOctal
Filament6.3 V @ 1200 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated, DC-AC Parallel supply
Absolute Maximum Ratings
Plate Voltage400 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Measuring Values | 100 V | 14000 | 5000 | 5.6 | 100 mA |
| Triode Connected | 100 V | 14500 | 350 | — | 52 mA |
| Push-Pull Class B (2 tubes) | 250 V | — | — | — | 94 mA |
Application Notes
Specifically designed for horizontal deflection in television circuits. Avoid Barkhausen-Kurz oscillations by choosing Rg2 > 2.2 kOhms.
Datasheets
Datasheet: EL500.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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