U52
5 Tubes in archive
BrandMarconi
ClassFull-wave Rectifier
BaseInternational octal
Construction
Primary TypeBi-phase half wave rectifier
EnvelopeDome top
Sections2
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage500 V
Cathode Current250 mA
Audio Performance
Key Features
- Directly heated
- Dome top bulb
- Horizontal or vertical mounting
Application Notes
Vertical mounting is preferred. Horizontal operation is permitted if pins 1 and 4 are in a vertical plane.
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