BTL 3-1
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BrandBrown Boveri
ClassTransmitting Triode
FilamentV @ mA
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage6200 V
Plate Dissipation3000 W
Grid 1 Voltage-1000 V
Cathode Current1400 mA
Audio Performance
Key Features
- Air-Cooled
- Directly Heated Cathode
- Thoriated Tungsten Filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B AF Power Amplifier (2 tubes push-pull) | 4500V | 15000 | - | 30 | 2800mA |
| Class C RF Unmodulated (Grounded Cathode) | 6000V | 15000 | - | 30 | 1250mA |
| Class C RF Anode-Modulated | 5000V | 15000 | - | 30 | 980mA |
Application Notes
RF and AF amplifier in FM-TV SW transmitters. Industrial RF oscillators.
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