Tube-number record
TB 2/500
0 archive entries
TB 2/500 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Philips, construction Triode, maximum plate voltage 2000 V, and maximum plate dissipation 300 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation300 W
Cathode Current600 mA
Audio Performance
Power Output800 W
Key Features
- Thoriated tungsten cathode
- High frequency amplifier
- Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| N.F. Class B amplification (two valves) | 2000 V | 7000 | — | — | 600 mA |
| H.F. Class C telegraphy | 2000 V | 7000 | — | — | 410 mA |
| H.F. Class B telephony | 2000 V | 7000 | — | — | 205 mA |
| H.F. Class C anode modulation | 2000 V | 7000 | — | — | 300 mA |
Application Notes
Commonly used in oscillator and H.F. amplifier circuits up to 100 MHz.
0 results