GU 11
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BrandMarconi
ClassHot-cathode mercury-vapour rectifier
Construction
Primary TypeHot-cathode mercury-vapour
Rectifier TypeMercury-vapour
EnvelopeHard glass bulb
Filament / Heater
Absolute Maximum Ratings
Plate Voltage16000 V
Cathode Current8000 mA
Audio Performance
Key Features
- Domed anode
- Shrouded cathode
- Hard glass bulb
- Suitable for operation up to 6A at 15kV
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 3-phase full-wave | 15000V | - | - | - | 6000mA |
| 3-phase half-wave | 7500V | - | - | - | 6000mA |
Application Notes
For most applications air blast is recommended on the base. Seasoning required after transit/storage: 2 hours at normal filament voltage without anode voltage. Pre-heating time varies by ambient temperature: 1 minute at 25°C up to 28 minutes at 7°C.
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