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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

RS 720

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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
B-Betrieb10000 V24000—322000 mA
C-Betrieb10000 V24000—321450 mA
Anodenspannungsmodulation7500 V240002850321850 mA

Application Notes

Suitable for anode voltage modulation. Constant heater voltage within 5% recommended.

Filters

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Manufacturers

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