4080A
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ClassHot Cathode Mercury Vapour Rectifier
BaseSpecial 3 pin
Construction
Primary TypeRectifier
Rectifier TypeMercury Vapour
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide-coated shielded filament
Warm-up Time600s
Absolute Maximum Ratings
Plate Voltage16000 V
Cathode Current20000 mA
Audio Performance
Key Features
- Oxide-coated shielded filament
- Forced air cooling
- High power output
- Hot Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circuit 2 (2 valves) | 5000V | - | - | - | 31000mA |
| Circuit 3 (4 valves) | 10000V | - | - | - | 31000mA |
| Circuit 4 (3 valves) | 7500V | - | - | - | 38000mA |
| Circuit 5 (6 valves) | 7500V | - | - | - | 76000mA |
| Circuit 6 (6 valves) | 15000V | - | - | - | 47000mA |
Application Notes
Directly heated. Output circuit must be connected to the mid-point of the filament transformer secondary. After shipment or transit the valve must be pre-heated not less than 30 minutes before any anode voltage is applied so that mercury may be distributed correctly. Temperature limits for Natural Ventilation valid only for unrestricted ventilation.
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