Tube-number record
B329/12AU7
0 archive entries
B329/12AU7 is a tube type in the TubeDatabase archive (class: Double Triode). Recorded specifications: brand Marconi, year 1955, construction Dual triode, socket Noval (B9A), and maximum plate voltage 300 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 0.3 mA
Construction
Primary TypeDual triode
EnvelopeTubular
Sections2
Filament / Heater
Heater Notes12-6V Indirectly Heated
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristics (Per Section) | 250 V | 2200 | 7700 | 17 | 10.5 mA |
| Typical Operation (Voltage Amp) | 250 V | — | 100000 | — | — |
0 results