Tube-number record
8005
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BrandRCA
ClassPower Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeST-19
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1500 V
Plate Dissipation85 W
Grid 1 Voltage-200 V
Cathode Current200 mA
Audio Performance
Power Output330 W
Key Features
- Thoriated Tungsten Filament
- High Power Output
- Medium-Metal-Shell Base
- ST-19 Bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier & Modulator - Class B (ICAS) | 1500 V | — | 9800 | 20 | 165 mA |
| RF Power Amplifier & Oscillator - Class C Telegraphy (ICAS) | 1500 V | — | — | 20 | 200 mA |
Application Notes
The 8005 can be biased by any convenient method, but the use of a grid resistor is preferred because the bias is automatically varied as the load on the circuit varies.
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