3C/150A
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ClassRF Triode
BaseLarge 4-pin bayonet
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage2500 V
Plate Dissipation150 W
Cathode Current200 mA
Audio Performance
Power Output600 W
Key Features
- Thoriated tungsten filament
- RF Triode
- Large 4-pin bayonet base
- Maximum frequency 60 Mc/s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Measurement at Va 1kV | 1000V | 3000 | 6000 | 18 | 150mA |
| Class B Audio (2 valves) | 2500V | - | 16000 | - | 180mA |
| Class C RF Amplifier (Unmodulated) | 2500V | - | - | - | 200mA |
Application Notes
Power output for Class B Audio and Class C operations are approximate values. Direct grid current is subject to wide variation depending upon the impedance of the load circuit.
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