Tube-number record
4080A
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4080A is a tube type in the TubeDatabase archive (class: Hot Cathode Mercury Vapour Rectifier). Recorded specifications: construction Rectifier, socket 3-pin / Peewee, and maximum plate voltage 16000 V. The archive does not yet hold a photographed example of this type.
ClassHot Cathode Mercury Vapour Rectifier
Base3-pin / Peewee
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) | 5000 V | — | — | — | 31000 mA |
| Circuit 3 (4 valves) | 10000 V | — | — | — | 31000 mA |
| Circuit 4 (3 valves) | 7500 V | — | — | — | 38000 mA |
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.
Datasheets
Datasheet: 4080A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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