Tube-number record
U54
0 archive entries
BrandMarconi
ClassRectifier
BaseOctal
Filament5 V @ 2.8 mA
Construction
Primary TypeIndirectly heated
Rectifier TypeBi-Phase
EnvelopeDome top tubular
Sections2
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage500 V
Cathode Current250 mA
Audio Performance
Key Features
- Indirectly heated
- Bi-phase rectifier
- Dome top tubular bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitor input | 500 V | — | — | — | 250 mA |
0 results