808
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ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation75 W
Grid 1 Voltage-400 V
Cathode Current150 mA
Audio Performance
Power Output300 W
Key Features
- High-mu triode
- Transmitting tube
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier Class C CCS | 1500V | 2000 | - | 47 | 125mA |
| RF Power Amplifier Class C ICAS | 2000V | 2000 | - | 47 | 150mA |
Application Notes
Commonly used in RF power amplifiers and modulators.
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