Tube-number record
2V/560E
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2V/560E is a tube type in the TubeDatabase archive (class: Hot Cathode Mercury Vapour Rectifier). Recorded specifications: construction Rectifier, socket Special / none, and maximum plate voltage 20000 V. The archive does not yet hold a photographed example of this type.
ClassHot Cathode Mercury Vapour Rectifier
BaseSpecial / none
Construction
Primary TypeRectifier
Rectifier TypeMercury Vapour
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide-coated shielded filament
Warm-up Time300s
Absolute Maximum Ratings
Plate Voltage20000 V
Cathode Current7500 mA
Audio Performance
Key Features
- Oxide-coated shielded filament
- Mercury Vapour
- Hot Cathode
- Natural and forced ventilation ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circuit 2 (2 Valves) | 6400 V | — | — | — | 12500 mA |
| Circuit 3 (4 Valves) | 13000 V | — | — | — | 12500 mA |
| Circuit 4 (3 Valves) | 9500 V | — | — | — | 16000 mA |
Application Notes
After shipment or transit the valve must be pre-heated not less than 30 minutes before any anode voltage is applied so that the mercury may be distributed correctly. This rectifier being directly heated it is recommended that the output circuit be returned to the mid-point of the filament transformer secondary.
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