RS 533
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BrandTelefunken
ClassTriode
BaseCoaxial/Grid Ring
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialWolfram thoriert
Absolute Maximum Ratings
Plate Voltage10000 V
Plate Dissipation7000 W
Grid 1 Voltage-900 V
Cathode Current4000 mA
Audio Performance
Key Features
- Water-cooled
- Thoriated tungsten cathode
- Directly heated
- Grid ring lead-through
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF-Verstärkung, B-Betrieb | 10000V | 33000 | - | 33 | 1600mA |
| HF-Verstärkung, C-Betrieb | 10000V | 33000 | - | 33 | 1500mA |
| Anodenspannungsmodulation | 6500V | - | - | - | 1100mA |
Application Notes
Used in MW, KW transmitters and industrial generators.
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