Tube-number record
4014-A
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BrandStandard Valves
ClassPower Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeDouble-ended water-cooled bulb
Base MaterialMetal and Glass
SectionsSingle
Filament / Heater
MaterialPure Tungsten
Absolute Maximum Ratings
Plate Voltage12000 V
Plate Dissipation12000 W
Cathode Current1500 mA
Audio Performance
Power Output13200 W
Key Features
- Pure Tungsten filament
- Constant voltage type
- Water cooled
- Double ended construction
- Internal water jacket
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B A.F. Amp (Balanced 2 valves) | 10000 V | 5333 | 7500 | 40 | 250 mA |
| Class B Telephony | 10000 V | 5333 | 7500 | 40 | 750 mA |
| Class C Telephony | 7000 V | 5333 | 7500 | 40 | 750 mA |
Application Notes
No water jacket required as it forms part of the valve. Typical operation curves taken with A.C. filament heating, referred to the centre point of the filament.
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