Tube-number record
EF 14
0 archive entries
EF 14 is a tube type in the TubeDatabase archive (class: STEILE PENTODE). Recorded specifications: brand VEB FUNKWERK ERFURT, year 1953, construction Pentode, socket DIN 41509, maximum plate voltage 300 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.
BrandVEB FUNKWERK ERFURT
ClassSTEILE PENTODE
BaseDIN 41509
Filament6.3 V @ 450 mA
Construction
Primary TypePentode
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Breitband-Verstärker | 250 V | — | 180000 | — | 12 mA |
| Antennen-Verstärker (Triode connection) | 250 V | — | 45000 | — | 18 mA |
Application Notes
Diese Rohre darf nur mit automatischer Gittervorspannungserzeugung betrieben werden.
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