Tube-number record
TA 4/800
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TA 4/800 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand PHILIPS, construction Triode, maximum plate voltage 4000 V, and maximum plate dissipation 500 W. The archive does not yet hold a photographed example of this type.
BrandPHILIPS
ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage4000 V
Plate Dissipation500 W
Audio Performance
Key Features
- H.F. amplifier
- Oscillator
- Direct heating
- Vertical mounting position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| C telegraphy | 4000 V | 4500 | — | 41 | — |
| B telephony | 4000 V | 4500 | — | 41 | — |
| C plate modulation | 3000 V | 4500 | — | 41 | — |
Application Notes
Commonly used for Diathermy, H.F. amplification and oscillation.
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