Tube-number record
ENDPENTODE
0 archive entries
ENDPENTODE is a tube type in the TubeDatabase archive (class: Power pentode). Recorded specifications: brand Telefunken, construction Pentode, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 10.5 W. The archive does not yet hold a photographed example of this type.
BrandTelefunken
ClassPower pentode
BaseNoval (B9A)
Filament6.3 V @ 760 mA
Construction
Primary TypePentode
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated, DC-AC heating
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Dynamic conditions (Pulse) | 50 V | — | — | — | 200 mA |
| Dynamic conditions (Pulse) | 65 V | — | — | — | 285 mA |
Application Notes
To account for tube tolerances and life decrease, circuits should be designed for 60% of the peak anode current rating at Ug1 = -1V.
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