4279-A
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BrandStandard Valves
ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation1200 W
Cathode Current800 mA
Audio Performance
Power Output2200 W
Key Features
- Thoriated Tungsten filament
- Constant voltage type
- High power output
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A A.F. Amp | 2500V | 5000 | 2000 | 10 | 300mA |
| Class B A.F. Amp (Max Signal) | 2500V | - | - | - | 800mA |
Application Notes
Standard Valves specifications from Nov 1937 and Sept 1938. Curves are taken with A.C. filament heating.
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