Tube-number record
4222-B
0 archive entries
4222-B is a tube type in the TubeDatabase archive (class: Half Wave Water Cooled Rectifier). Recorded specifications: brand Standard valves, construction Rectifier, maximum plate voltage 45000 V, and maximum plate dissipation 10000 W. The archive does not yet hold a photographed example of this type.
BrandStandard valves
ClassHalf Wave Water Cooled Rectifier
Construction
Primary TypeRectifier
Rectifier Typehalf-wave
EnvelopeWater Cooled
Sections1
Filament / Heater
MaterialPure Tungsten
Absolute Maximum Ratings
Plate Voltage45000 V
Plate Dissipation10000 W
Audio Performance
Key Features
- Pure Tungsten filament
- Constant voltage type filament
- Water cooled anode
- Multiple water jacket compatibility
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 1 Valve Circuit | 7000 V | — | — | — | 1500 mA |
| 2 Valves Circuit | 14000 V | — | — | — | 3000 mA |
| 3 Valves Circuit | 22500 V | — | — | — | 4500 mA |
Application Notes
The exact filament voltage is marked on the bulb of each valve.
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