Tube-number record
TB 1/50
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TB 1/50 is a tube type in the TubeDatabase archive (class: Transmitting Tube). Recorded specifications: brand Philips, construction Triode, maximum plate voltage 1000 V, and maximum plate dissipation 50 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTransmitting Tube
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
Materialthoriated
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation50 W
Cathode Current150 mA
Audio Performance
Key Features
- Thoriated filament
- High emission
- Short wave operation up to 15m
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Oscillator | 1000 V | 3000 | 8000 | 25 | 125 mA |
| Telegraphy (Intermittent) | 800 V | — | — | — | 150 mA |
Application Notes
Suitable for use as an oscillator, telegraphy/telephony amplifier, high-power low-frequency amplifier (e.g., public address systems), or rectifier. Can drive up to 3 TB 2/250 tubes.
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