3W5000A3
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BrandEimac
ClassMedium-mu Transmitting Triode
BaseCylindrical filament-stem
Construction
Primary TypeTriode
EnvelopeWater-cooled anode
Base MaterialCylindrical
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage6000 V
Plate Dissipation5000 W
Cathode Current2500 mA
Audio Performance
Power Output13000 W
Key Features
- Water-cooled anode
- Thoriated tungsten filament
- Low-inductance cylindrical filament-stem structure
- VHF operation
- Linear filament-tank circuit compatibility
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class-C FM or Telegraphy | 4000V | 20000 | 1000 | 20 | 2500mA |
| Grounded-Grid Circuit 110 Mc | 4000V | 20000 | - | 20 | 1800mA |
| Plate Modulated RF Amplifier | 5000V | - | 1400 | 20 | 1450mA |
Application Notes
The 3W5000A3 is a water-cooled version of the air-cooled 3X2500A3. A 0.1 henry choke shunted by a spark gap should be connected between the plates and high voltage supply for protection from transients in Class-C FM or Telegraphy service.
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