RS 721
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BrandTelefunken
ClassTransmitting Triode
Construction
Primary TypeTriode
EnvelopeMetal-Ceramic
Base MaterialDisk-seal
Sections1
Filament / Heater
MaterialWolfram thoriert
Absolute Maximum Ratings
Plate Voltage10000 V
Plate Dissipation15000 W
Audio Performance
Key Features
- Luftgekühlt
- Scheibenförmige Gitterdurchführung
- Direkt geheizt
- UKW-Sender
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Amplifier, Class B, f < 30 MHz | 10000V | 24000 | - | 31.25 | 4100mA |
| RF Amplifier, Class B, f = 100 MHz | 6000V | 24000 | - | 31.25 | 3100mA |
Application Notes
Except for the normal drive power, in grid-base circuits, the feed-through power (approx. 1.5 to 2 kW) must also be provided by the driver stage.
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