Tube-number record
N17
0 archive entries
N17 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Marconi, year 1956, construction Pentode, socket Miniature 7-pin (B7G), and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassOutput Pentode
BaseMiniature 7-pin (B7G)
Construction
Primary TypePentode
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage67.5 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Series | 90 V | 1425 | — | — | 6.1 mA |
| Class A Parallel | 90 V | 1575 | — | — | 7.4 mA |
Application Notes
Interchangeable with the American type 3S4.
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