
Tube-number record
RS 720
0 archive entries
RS 720 is a tube type in the TubeDatabase archive (class: transmitting triode). Recorded specifications: brand TELEFUNKEN, construction Triode, maximum plate voltage 10000 V, and maximum plate dissipation 6000 W. The archive does not yet hold a photographed example of this type.
BrandTELEFUNKEN
Classtransmitting triode
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage10000 V
Plate Dissipation6000 W
Audio Performance
Key Features
- Luftgekühlt (Air-cooled)
- Anodenspannungsmodulation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| B-Betrieb | 10000 V | 24000 | — | 32 | 2000 mA |
| C-Betrieb | 10000 V | 24000 | — | 32 | 1450 mA |
| Anodenspannungsmodulation | 7500 V | 24000 | 2850 | 32 | 1850 mA |
Application Notes
Suitable for anode voltage modulation. Constant heater voltage within 5% recommended.
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