U319
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BrandMarconi
ClassHalf Wave Rectifier
BaseB8A
Filament20V @ 0.3mA
Construction
Primary TypeHalf-wave rectifier
EnvelopeTubular
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Cathode Current170 mA
H-C Voltage350 V
Audio Performance
Key Features
- Any mounting position
- Tubular bulb
- Indirectly heated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single Phase Half wave, Capacitor input | 250V | - | - | - | 170mA |
Application Notes
Free air circulation is preferable. If the retaining device is in the form of a canister, the surfaces should be blackened. The temperature of the hottest part of the bulb must not exceed 225°C.
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