Tube-number record
4030-C
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4030-C is a tube type in the TubeDatabase archive (class: Double Ended Water Cooled Triode). Recorded specifications: brand Standard, construction Triode, base Copper Jacket, maximum plate voltage 17500 V, and maximum plate dissipation 80000 W. The archive does not yet hold a photographed example of this type.
BrandStandard
ClassDouble Ended Water Cooled Triode
Construction
Primary TypeTriode
EnvelopeDouble Ended Water Cooled
Base MaterialCopper Jacket
SectionsSingle
Filament / Heater
MaterialPure tungsten
Absolute Maximum Ratings
Plate Voltage17500 V
Plate Dissipation80000 W
Cathode Current11000 mA
Audio Performance
Power Output100000 W
Key Features
- Water cooled
- Double ended
- Pure tungsten filament
- Corona rings fitted
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B A.F. Amp and Mod. (2 valves) | 14000 V | 20000 | 1800 | 36 | 6500 mA |
| Class B Telephony | 17500 V | — | — | — | 4800 mA |
| Class C Telegraphy | 15000 V | — | — | — |
Application Notes
The code numbers for parts to be ordered separately: Grid and filament radiators type LP.77880, Filament radiator type LP.77883, Filament connection type Det.105/Det.105A.
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