
Tube-number record
ML-8549
0 archive entries
ML-8549 is a tube type in the TubeDatabase archive (class: Super Power Triode). Recorded specifications: brand Machlett, year 1964, construction Triode, base Coaxial water-cooled, socket Coaxial, maximum plate voltage 65000 V, and maximum plate dissipation 500000 W. The archive does not yet hold a photographed example of this type.
BrandMachlett
ClassSuper Power Triode
BaseCoaxial
Construction
Primary TypeTriode
EnvelopeCeramic-metal
Base MaterialCoaxial water-cooled
SectionsSingle
Filament / Heater
MaterialThoriated-tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telephony (Cathode Drive) | 15000 V | — | — | 20 | 90000 mA |
| Class C Telegraphy | 25000 V | — | — | 20 | 115000 mA |
Application Notes
When used as a switch tube in hard-tube pulse modulators, it can deliver more than 60 Mw pulse output. Adequate rayproof shielding for x-rays must be provided.
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