Tube-number record
9T71
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9T71 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand NEC, construction Other / special, maximum plate voltage 17000 V, and maximum plate dissipation 50000 W. The archive does not yet hold a photographed example of this type.
BrandNEC
ClassPower Triode
Construction
Primary TypeOther / special
EnvelopeWater Cooled
Filament / Heater
MaterialThoriated-Tungsten
Absolute Maximum Ratings
Plate Voltage17000 V
Plate Dissipation50000 W
Audio Performance
Key Features
- Water Cooled
- Grounded-Grid Type
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grounded-Grid | — | — | — | 39 | — |
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