Tube-number record
BTL 3-1
0 archive entries
BTL 3-1 is a tube type in the TubeDatabase archive (class: Transmitting Triode). Recorded specifications: brand Brown Boveri, construction Triode, maximum plate voltage 6200 V, and maximum plate dissipation 3000 W. The archive does not yet hold a photographed example of this type.
BrandBrown Boveri
ClassTransmitting Triode
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) | 4500 V | 15000 | — | 30 | 2800 mA |
| Class C RF Unmodulated (Grounded Cathode) | 6000 V | 15000 | — | 30 | 1250 mA |
| Class C RF Anode-Modulated | 5000 V | 15000 | — | 30 | 980 mA |
Application Notes
RF and AF amplifier in FM-TV SW transmitters. Industrial RF oscillators.
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