Tube-number record
TB 2/200
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BrandPhilips
ClassTriode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation130 W
Cathode Current230 mA
Audio Performance
Key Features
- Directly heated
- Thoriated tungsten filament
- High frequency amplifier
- Low frequency amplifier
- Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF class C telegraphy | 2000 V | 4200 | — | 27 | 190 mA |
| HF class B telephony | 2000 V | 4200 | — | 27 | 95 mA |
| HF class C anode modulation | 1600 V | 4200 | — | 27 | 135 mA |
Application Notes
Mounting position: vertical with base up or down. If base is up, the tube should be supported.
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