ML-8547
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BrandMachlett
ClassTriode
BaseCoaxial
Construction
Primary TypeGeneral Purpose Triode
EnvelopeCeramic
Sections1
Filament / Heater
MaterialThoriated-tungsten
Absolute Maximum Ratings
Plate Voltage11000 V
Plate Dissipation175000 W
Grid 1 Voltage-1200 V
Cathode Current40000 mA
Audio Performance
Power Output300000 W
Key Features
- Water-cooled
- Coaxial terminals
- High plate current at low voltage
- Stress-free thoriated-tungsten filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier and Modulator Class B (Two Tubes) | 10000V | - | - | 14 | 48000mA |
| RF Power Amplifier Class C Telegraphy | 11000V | - | 238 | 14 | 25000mA |
| Pulse Modulator | 16000V | - | - | - | 350000mA |
Application Notes
For cathode currents in excess of 350 amps, filament voltage must be 15.0 volts. The anode incorporates an integral water jacket and is designed to dissipate 175 kW.
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