Tube-number record
4013-C
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BrandStandard
ClassWater Cooled Triode
Construction
Primary TypeTriode
EnvelopeSingle ended water cooled
SectionsSingle
Filament / Heater
MaterialPure Tungsten
Absolute Maximum Ratings
Plate Voltage6000 V
Plate Dissipation5000 W
Cathode Current700 mA
Audio Performance
Power Output3300 W
Key Features
- Pure Tungsten filament
- Water cooled
- Constant voltage type
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B A.F. Amp (2 valves balanced circuit) | 5000 V | 3684.21 | 5700 | 21 | 600 mA |
| Radio Frequency Class B Telephony | 5000 V | 3684.21 | 5700 | 21 | 350 mA |
| Radio Frequency Class C Telephony | 3500 V | 3684.21 | 5700 | 21 | 350 mA |
| Radio Frequency Class C Telegraphy | 5000 V | 3684.21 | 5700 | 21 | 700 mA |
Application Notes
Exact filament voltage is marked on the bulb. Grid and anode voltages are referred to the centre point of the filament.
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