AH 200
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BrandMarconi's Wireless Telegraph Company Limited
ClassRectifier
BaseFilament Cap and base connection
Construction
Primary TypeHot-cathode mercury-vapour rectifier
Rectifier TypeHalf-wave
EnvelopeHard glass bulb
Base MaterialNot specified
SectionsSingle
Filament / Heater
MaterialNot specified
Warm-up Time2s
Absolute Maximum Ratings
Plate Voltage16000 V
Cathode Current3500 mA
Audio Performance
Key Features
- Domed anode
- Shrouded cathode
- Mercury-vapour type
- Continuous or thermostatically switched air blast cooling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 3-phase half-wave | 7500V | - | - | - | 10000mA |
| 3-phase full-wave | 15000V | - | - | - | 10000mA |
Application Notes
Valve should be operated with air blast at 35-40°C. Ageing schedule of 1 hour at normal filament voltage required after transit. Screen against RF fields. Ambient temperature must be above 3°C.
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